Riješi 1/4(x+1)(x-1)(x-1)(x+1)+x^2=1/4(x^2+1)(x^2+1)

$$\frac{ 1 }{ 4 } (x+1)(x-1)(x-1)(x+1)+ { x }^{ 2 } = \frac{ 1 }{ 4 } ( { x }^{ 2 } +1)( { x }^{ 2 } +1)$$

Izračunaj x (complex solution)

$$x\in \mathrm{C}$$

Koraci rješenja

Pomnožite x+1 i x+1 da biste dobili \left(x+1\right)^{2}.

$$\frac{1}{4}\left(x+1\right)^{2}\left(x-1\right)\left(x-1\right)+x^{2}=\frac{1}{4}\left(x^{2}+1\right)\left(x^{2}+1\right)$$

Pomnožite x-1 i x-1 da biste dobili \left(x-1\right)^{2}.

$$\frac{1}{4}\left(x+1\right)^{2}\left(x-1\right)^{2}+x^{2}=\frac{1}{4}\left(x^{2}+1\right)\left(x^{2}+1\right)$$

Pomnožite x^{2}+1 i x^{2}+1 da biste dobili \left(x^{2}+1\right)^{2}.

$$\frac{1}{4}\left(x+1\right)^{2}\left(x-1\right)^{2}+x^{2}=\frac{1}{4}\left(x^{2}+1\right)^{2}$$

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

$$\frac{1}{4}\left(x^{2}+2x+1\right)\left(x-1\right)^{2}+x^{2}=\frac{1}{4}\left(x^{2}+1\right)^{2}$$

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

$$\frac{1}{4}\left(x^{2}+2x+1\right)\left(x^{2}-2x+1\right)+x^{2}=\frac{1}{4}\left(x^{2}+1\right)^{2}$$

Koristite svojstvo distributivnosti da biste pomnožili \frac{1}{4} s x^{2}+2x+1.

$$\left(\frac{1}{4}x^{2}+\frac{1}{2}x+\frac{1}{4}\right)\left(x^{2}-2x+1\right)+x^{2}=\frac{1}{4}\left(x^{2}+1\right)^{2}$$

Koristite svojstvo distributivnosti da biste pomnožili \frac{1}{4}x^{2}+\frac{1}{2}x+\frac{1}{4} s x^{2}-2x+1 i kombinirali slične izraze.

$$\frac{1}{4}x^{4}-\frac{1}{2}x^{2}+\frac{1}{4}+x^{2}=\frac{1}{4}\left(x^{2}+1\right)^{2}$$

Kombinirajte -\frac{1}{2}x^{2} i x^{2} da biste dobili \frac{1}{2}x^{2}.

$$\frac{1}{4}x^{4}+\frac{1}{2}x^{2}+\frac{1}{4}=\frac{1}{4}\left(x^{2}+1\right)^{2}$$

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

$$\frac{1}{4}x^{4}+\frac{1}{2}x^{2}+\frac{1}{4}=\frac{1}{4}\left(\left(x^{2}\right)^{2}+2x^{2}+1\right)$$

Da biste izračunali potenciju potencije, pomnožite eksponente. Pomnožite 2 i 2 da biste dobili 4.

$$\frac{1}{4}x^{4}+\frac{1}{2}x^{2}+\frac{1}{4}=\frac{1}{4}\left(x^{4}+2x^{2}+1\right)$$

Koristite svojstvo distributivnosti da biste pomnožili \frac{1}{4} s x^{4}+2x^{2}+1.

$$\frac{1}{4}x^{4}+\frac{1}{2}x^{2}+\frac{1}{4}=\frac{1}{4}x^{4}+\frac{1}{2}x^{2}+\frac{1}{4}$$

Oduzmite \frac{1}{4}x^{4} od obiju strana.

$$\frac{1}{4}x^{4}+\frac{1}{2}x^{2}+\frac{1}{4}-\frac{1}{4}x^{4}=\frac{1}{2}x^{2}+\frac{1}{4}$$

Kombinirajte \frac{1}{4}x^{4} i -\frac{1}{4}x^{4} da biste dobili 0.

$$\frac{1}{2}x^{2}+\frac{1}{4}=\frac{1}{2}x^{2}+\frac{1}{4}$$

Oduzmite \frac{1}{2}x^{2} od obiju strana.

$$\frac{1}{2}x^{2}+\frac{1}{4}-\frac{1}{2}x^{2}=\frac{1}{4}$$

Kombinirajte \frac{1}{2}x^{2} i -\frac{1}{2}x^{2} da biste dobili 0.

$$\frac{1}{4}=\frac{1}{4}$$

Usporedite \frac{1}{4} i \frac{1}{4}.

$$\text{true}$$

To vrijedi za svaki x.

$$x\in \mathrm{C}$$

Izračunaj x

$$x\in \mathrm{R}$$

Koraci rješenja

Pomnožite x+1 i x+1 da biste dobili \left(x+1\right)^{2}.

$$\frac{1}{4}\left(x+1\right)^{2}\left(x-1\right)\left(x-1\right)+x^{2}=\frac{1}{4}\left(x^{2}+1\right)\left(x^{2}+1\right)$$

Pomnožite x-1 i x-1 da biste dobili \left(x-1\right)^{2}.

$$\frac{1}{4}\left(x+1\right)^{2}\left(x-1\right)^{2}+x^{2}=\frac{1}{4}\left(x^{2}+1\right)\left(x^{2}+1\right)$$

Pomnožite x^{2}+1 i x^{2}+1 da biste dobili \left(x^{2}+1\right)^{2}.

$$\frac{1}{4}\left(x+1\right)^{2}\left(x-1\right)^{2}+x^{2}=\frac{1}{4}\left(x^{2}+1\right)^{2}$$

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

$$\frac{1}{4}\left(x^{2}+2x+1\right)\left(x-1\right)^{2}+x^{2}=\frac{1}{4}\left(x^{2}+1\right)^{2}$$

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

$$\frac{1}{4}\left(x^{2}+2x+1\right)\left(x^{2}-2x+1\right)+x^{2}=\frac{1}{4}\left(x^{2}+1\right)^{2}$$

Koristite svojstvo distributivnosti da biste pomnožili \frac{1}{4} s x^{2}+2x+1.

$$\left(\frac{1}{4}x^{2}+\frac{1}{2}x+\frac{1}{4}\right)\left(x^{2}-2x+1\right)+x^{2}=\frac{1}{4}\left(x^{2}+1\right)^{2}$$

Koristite svojstvo distributivnosti da biste pomnožili \frac{1}{4}x^{2}+\frac{1}{2}x+\frac{1}{4} s x^{2}-2x+1 i kombinirali slične izraze.

$$\frac{1}{4}x^{4}-\frac{1}{2}x^{2}+\frac{1}{4}+x^{2}=\frac{1}{4}\left(x^{2}+1\right)^{2}$$

Kombinirajte -\frac{1}{2}x^{2} i x^{2} da biste dobili \frac{1}{2}x^{2}.

$$\frac{1}{4}x^{4}+\frac{1}{2}x^{2}+\frac{1}{4}=\frac{1}{4}\left(x^{2}+1\right)^{2}$$

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

$$\frac{1}{4}x^{4}+\frac{1}{2}x^{2}+\frac{1}{4}=\frac{1}{4}\left(\left(x^{2}\right)^{2}+2x^{2}+1\right)$$

Da biste izračunali potenciju potencije, pomnožite eksponente. Pomnožite 2 i 2 da biste dobili 4.

$$\frac{1}{4}x^{4}+\frac{1}{2}x^{2}+\frac{1}{4}=\frac{1}{4}\left(x^{4}+2x^{2}+1\right)$$

Koristite svojstvo distributivnosti da biste pomnožili \frac{1}{4} s x^{4}+2x^{2}+1.

$$\frac{1}{4}x^{4}+\frac{1}{2}x^{2}+\frac{1}{4}=\frac{1}{4}x^{4}+\frac{1}{2}x^{2}+\frac{1}{4}$$

Oduzmite \frac{1}{4}x^{4} od obiju strana.

$$\frac{1}{4}x^{4}+\frac{1}{2}x^{2}+\frac{1}{4}-\frac{1}{4}x^{4}=\frac{1}{2}x^{2}+\frac{1}{4}$$

Kombinirajte \frac{1}{4}x^{4} i -\frac{1}{4}x^{4} da biste dobili 0.

$$\frac{1}{2}x^{2}+\frac{1}{4}=\frac{1}{2}x^{2}+\frac{1}{4}$$

Oduzmite \frac{1}{2}x^{2} od obiju strana.

$$\frac{1}{2}x^{2}+\frac{1}{4}-\frac{1}{2}x^{2}=\frac{1}{4}$$

Kombinirajte \frac{1}{2}x^{2} i -\frac{1}{2}x^{2} da biste dobili 0.

$$\frac{1}{4}=\frac{1}{4}$$

Usporedite \frac{1}{4} i \frac{1}{4}.

$$\text{true}$$

To vrijedi za svaki x.

$$x\in \mathrm{R}$$