Riješi (x+1)^2(x-(1-3i))(x-(1+3i))

$$( x + 1 ) ^ { 2 } ( x - ( 1 - 3 i ) ) ( x - ( 1 + 3 i ) )$$

Izračunaj

$$\left(x+\left(-1-3i\right)\right)\left(x+\left(-1+3i\right)\right)\left(x+1\right)^{2}$$

Koraci rješenja

Upotrijebite binomni teorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} da biste proširili \left(x+1\right)^{2}.

$$\left(x^{2}+2x+1\right)\left(x-\left(1-3i\right)\right)\left(x-\left(1+3i\right)\right)$$

Koristite svojstvo distributivnosti da biste pomnožili x^{2}+2x+1 s x-\left(1-3i\right).

$$\left(x^{2}\left(x-\left(1-3i\right)\right)+2x\left(x-\left(1-3i\right)\right)+x-\left(1-3i\right)\right)\left(x-\left(1+3i\right)\right)$$

Koristite svojstvo distributivnosti da biste pomnožili x^{2}\left(x-\left(1-3i\right)\right)+2x\left(x-\left(1-3i\right)\right)+x-\left(1-3i\right) s x-\left(1+3i\right).

$$x^{2}\left(x-\left(1-3i\right)\right)\left(x-\left(1+3i\right)\right)+2x\left(x-\left(1-3i\right)\right)\left(x-\left(1+3i\right)\right)+\left(x-\left(1-3i\right)\right)\left(x-\left(1+3i\right)\right)$$

Pomnožite -1 i 1-3i da biste dobili -1+3i.

$$x^{2}\left(x+\left(-1+3i\right)\right)\left(x-\left(1+3i\right)\right)+2x\left(x-\left(1-3i\right)\right)\left(x-\left(1+3i\right)\right)+\left(x-\left(1-3i\right)\right)\left(x-\left(1+3i\right)\right)$$

Pomnožite -1 i 1+3i da biste dobili -1-3i.

$$x^{2}\left(x+\left(-1+3i\right)\right)\left(x+\left(-1-3i\right)\right)+2x\left(x-\left(1-3i\right)\right)\left(x-\left(1+3i\right)\right)+\left(x-\left(1-3i\right)\right)\left(x-\left(1+3i\right)\right)$$

Koristite svojstvo distributivnosti da biste pomnožili x^{2} s x+\left(-1+3i\right).

$$\left(x^{3}+\left(-1+3i\right)x^{2}\right)\left(x+\left(-1-3i\right)\right)+2x\left(x-\left(1-3i\right)\right)\left(x-\left(1+3i\right)\right)+\left(x-\left(1-3i\right)\right)\left(x-\left(1+3i\right)\right)$$

Koristite svojstvo distributivnosti da biste pomnožili x^{3}+\left(-1+3i\right)x^{2} s x+\left(-1-3i\right) i kombinirali slične izraze.

$$x^{4}-2x^{3}+10x^{2}+2x\left(x-\left(1-3i\right)\right)\left(x-\left(1+3i\right)\right)+\left(x-\left(1-3i\right)\right)\left(x-\left(1+3i\right)\right)$$

Pomnožite -1 i 1-3i da biste dobili -1+3i.

$$x^{4}-2x^{3}+10x^{2}+2x\left(x+\left(-1+3i\right)\right)\left(x-\left(1+3i\right)\right)+\left(x-\left(1-3i\right)\right)\left(x-\left(1+3i\right)\right)$$

Pomnožite -1 i 1+3i da biste dobili -1-3i.

$$x^{4}-2x^{3}+10x^{2}+2x\left(x+\left(-1+3i\right)\right)\left(x+\left(-1-3i\right)\right)+\left(x-\left(1-3i\right)\right)\left(x-\left(1+3i\right)\right)$$

Koristite svojstvo distributivnosti da biste pomnožili 2x s x+\left(-1+3i\right).

$$x^{4}-2x^{3}+10x^{2}+\left(2x^{2}+\left(-2+6i\right)x\right)\left(x+\left(-1-3i\right)\right)+\left(x-\left(1-3i\right)\right)\left(x-\left(1+3i\right)\right)$$

Koristite svojstvo distributivnosti da biste pomnožili 2x^{2}+\left(-2+6i\right)x s x+\left(-1-3i\right) i kombinirali slične izraze.

$$x^{4}-2x^{3}+10x^{2}+2x^{3}-4x^{2}+20x+\left(x-\left(1-3i\right)\right)\left(x-\left(1+3i\right)\right)$$

Kombinirajte -2x^{3} i 2x^{3} da biste dobili 0.

$$x^{4}+10x^{2}-4x^{2}+20x+\left(x-\left(1-3i\right)\right)\left(x-\left(1+3i\right)\right)$$

Kombinirajte 10x^{2} i -4x^{2} da biste dobili 6x^{2}.

$$x^{4}+6x^{2}+20x+\left(x-\left(1-3i\right)\right)\left(x-\left(1+3i\right)\right)$$

Pomnožite -1 i 1-3i da biste dobili -1+3i.

$$x^{4}+6x^{2}+20x+\left(x+\left(-1+3i\right)\right)\left(x-\left(1+3i\right)\right)$$

Pomnožite -1 i 1+3i da biste dobili -1-3i.

$$x^{4}+6x^{2}+20x+\left(x+\left(-1+3i\right)\right)\left(x+\left(-1-3i\right)\right)$$

Koristite svojstvo distributivnosti da biste pomnožili x+\left(-1+3i\right) s x+\left(-1-3i\right) i kombinirali slične izraze.

$$x^{4}+6x^{2}+20x+x^{2}-2x+10$$

Kombinirajte 6x^{2} i x^{2} da biste dobili 7x^{2}.

$$x^{4}+7x^{2}+20x-2x+10$$

Kombinirajte 20x i -2x da biste dobili 18x.

$$x^{4}+7x^{2}+18x+10$$

Proširi

$$x^{4}+7x^{2}+18x+10$$

Koraci rješenja

Upotrijebite binomni teorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} da biste proširili \left(x+1\right)^{2}.

$$\left(x^{2}+2x+1\right)\left(x-\left(1-3i\right)\right)\left(x-\left(1+3i\right)\right)$$

Koristite svojstvo distributivnosti da biste pomnožili x^{2}+2x+1 s x-\left(1-3i\right).

$$\left(x^{2}\left(x-\left(1-3i\right)\right)+2x\left(x-\left(1-3i\right)\right)+x-\left(1-3i\right)\right)\left(x-\left(1+3i\right)\right)$$

Koristite svojstvo distributivnosti da biste pomnožili x^{2}\left(x-\left(1-3i\right)\right)+2x\left(x-\left(1-3i\right)\right)+x-\left(1-3i\right) s x-\left(1+3i\right).

$$x^{2}\left(x-\left(1-3i\right)\right)\left(x-\left(1+3i\right)\right)+2x\left(x-\left(1-3i\right)\right)\left(x-\left(1+3i\right)\right)+\left(x-\left(1-3i\right)\right)\left(x-\left(1+3i\right)\right)$$

Pomnožite -1 i 1-3i da biste dobili -1+3i.

$$x^{2}\left(x+\left(-1+3i\right)\right)\left(x-\left(1+3i\right)\right)+2x\left(x-\left(1-3i\right)\right)\left(x-\left(1+3i\right)\right)+\left(x-\left(1-3i\right)\right)\left(x-\left(1+3i\right)\right)$$

Pomnožite -1 i 1+3i da biste dobili -1-3i.

$$x^{2}\left(x+\left(-1+3i\right)\right)\left(x+\left(-1-3i\right)\right)+2x\left(x-\left(1-3i\right)\right)\left(x-\left(1+3i\right)\right)+\left(x-\left(1-3i\right)\right)\left(x-\left(1+3i\right)\right)$$

Koristite svojstvo distributivnosti da biste pomnožili x^{2} s x+\left(-1+3i\right).

$$\left(x^{3}+\left(-1+3i\right)x^{2}\right)\left(x+\left(-1-3i\right)\right)+2x\left(x-\left(1-3i\right)\right)\left(x-\left(1+3i\right)\right)+\left(x-\left(1-3i\right)\right)\left(x-\left(1+3i\right)\right)$$

Koristite svojstvo distributivnosti da biste pomnožili x^{3}+\left(-1+3i\right)x^{2} s x+\left(-1-3i\right) i kombinirali slične izraze.

$$x^{4}-2x^{3}+10x^{2}+2x\left(x-\left(1-3i\right)\right)\left(x-\left(1+3i\right)\right)+\left(x-\left(1-3i\right)\right)\left(x-\left(1+3i\right)\right)$$

Pomnožite -1 i 1-3i da biste dobili -1+3i.

$$x^{4}-2x^{3}+10x^{2}+2x\left(x+\left(-1+3i\right)\right)\left(x-\left(1+3i\right)\right)+\left(x-\left(1-3i\right)\right)\left(x-\left(1+3i\right)\right)$$

Pomnožite -1 i 1+3i da biste dobili -1-3i.

$$x^{4}-2x^{3}+10x^{2}+2x\left(x+\left(-1+3i\right)\right)\left(x+\left(-1-3i\right)\right)+\left(x-\left(1-3i\right)\right)\left(x-\left(1+3i\right)\right)$$

Koristite svojstvo distributivnosti da biste pomnožili 2x s x+\left(-1+3i\right).

$$x^{4}-2x^{3}+10x^{2}+\left(2x^{2}+\left(-2+6i\right)x\right)\left(x+\left(-1-3i\right)\right)+\left(x-\left(1-3i\right)\right)\left(x-\left(1+3i\right)\right)$$

Koristite svojstvo distributivnosti da biste pomnožili 2x^{2}+\left(-2+6i\right)x s x+\left(-1-3i\right) i kombinirali slične izraze.

$$x^{4}-2x^{3}+10x^{2}+2x^{3}-4x^{2}+20x+\left(x-\left(1-3i\right)\right)\left(x-\left(1+3i\right)\right)$$

Kombinirajte -2x^{3} i 2x^{3} da biste dobili 0.

$$x^{4}+10x^{2}-4x^{2}+20x+\left(x-\left(1-3i\right)\right)\left(x-\left(1+3i\right)\right)$$

Kombinirajte 10x^{2} i -4x^{2} da biste dobili 6x^{2}.

$$x^{4}+6x^{2}+20x+\left(x-\left(1-3i\right)\right)\left(x-\left(1+3i\right)\right)$$

Pomnožite -1 i 1-3i da biste dobili -1+3i.

$$x^{4}+6x^{2}+20x+\left(x+\left(-1+3i\right)\right)\left(x-\left(1+3i\right)\right)$$

Pomnožite -1 i 1+3i da biste dobili -1-3i.

$$x^{4}+6x^{2}+20x+\left(x+\left(-1+3i\right)\right)\left(x+\left(-1-3i\right)\right)$$

Koristite svojstvo distributivnosti da biste pomnožili x+\left(-1+3i\right) s x+\left(-1-3i\right) i kombinirali slične izraze.

$$x^{4}+6x^{2}+20x+x^{2}-2x+10$$

Kombinirajte 6x^{2} i x^{2} da biste dobili 7x^{2}.

$$x^{4}+7x^{2}+20x-2x+10$$

Kombinirajte 20x i -2x da biste dobili 18x.

$$x^{4}+7x^{2}+18x+10$$