Datrys 180(120-3/5x)x+60(12000-(120-3/5x)x)

$$180(120- \frac{ 3 }{ 5 } x)x+60(12000-(120- \frac{ 3 }{ 5 } x)x)$$

Enrhifo

$$72\left(x\left(200-x\right)+10000\right)$$

Camau Ateb

Defnyddio’r briodwedd ddosbarthu i luosi 180 â 120-\frac{3}{5}x.

$$\left(21600+180\left(-\frac{3}{5}\right)x\right)x+60\left(12000-\left(120-\frac{3}{5}x\right)x\right)$$

Mynegwch 180\left(-\frac{3}{5}\right) fel ffracsiwn unigol.

$$\left(21600+\frac{180\left(-3\right)}{5}x\right)x+60\left(12000-\left(120-\frac{3}{5}x\right)x\right)$$

Lluosi 180 a -3 i gael -540.

$$\left(21600+\frac{-540}{5}x\right)x+60\left(12000-\left(120-\frac{3}{5}x\right)x\right)$$

Rhannu -540 â 5 i gael -108.

$$\left(21600-108x\right)x+60\left(12000-\left(120-\frac{3}{5}x\right)x\right)$$

Defnyddio’r briodwedd ddosbarthu i luosi 21600-108x â x.

$$21600x-108x^{2}+60\left(12000-\left(120-\frac{3}{5}x\right)x\right)$$

Defnyddio’r briodwedd ddosbarthu i luosi 120-\frac{3}{5}x â x.

$$21600x-108x^{2}+60\left(12000-\left(120x-\frac{3}{5}xx\right)\right)$$

Lluosi x a x i gael x^{2}.

$$21600x-108x^{2}+60\left(12000-\left(120x-\frac{3}{5}x^{2}\right)\right)$$

I ddod o hyd i wrthwyneb 120x-\frac{3}{5}x^{2}, dewch o hyd i wrthwyneb pob term.

$$21600x-108x^{2}+60\left(12000-120x-\left(-\frac{3}{5}x^{2}\right)\right)$$

Gwrthwyneb -\frac{3}{5}x^{2} yw \frac{3}{5}x^{2}.

$$21600x-108x^{2}+60\left(12000-120x+\frac{3}{5}x^{2}\right)$$

Defnyddio’r briodwedd ddosbarthu i luosi 60 â 12000-120x+\frac{3}{5}x^{2}.

$$21600x-108x^{2}[phone]x+60\times \frac{3}{5}x^{2}$$

Mynegwch 60\times \frac{3}{5} fel ffracsiwn unigol.

$$21600x-108x^{2}[phone]x+\frac{60\times 3}{5}x^{2}$$

Lluosi 60 a 3 i gael 180.

$$21600x-108x^{2}[phone]x+\frac{180}{5}x^{2}$$

Rhannu 180 â 5 i gael 36.

$$21600x-108x^{2}[phone]x+36x^{2}$$

Cyfuno 21600x a -7200x i gael 14400x.

$$14400x-108x^{2}+720000+36x^{2}$$

Cyfuno -108x^{2} a 36x^{2} i gael -72x^{2}.

$$14400x-72x^{2}+720000$$

Ehangu

$$720000+14400x-72x^{2}$$

Camau Ateb

Defnyddio’r briodwedd ddosbarthu i luosi 180 â 120-\frac{3}{5}x.

$$\left(21600+180\left(-\frac{3}{5}\right)x\right)x+60\left(12000-\left(120-\frac{3}{5}x\right)x\right)$$

Mynegwch 180\left(-\frac{3}{5}\right) fel ffracsiwn unigol.

$$\left(21600+\frac{180\left(-3\right)}{5}x\right)x+60\left(12000-\left(120-\frac{3}{5}x\right)x\right)$$

Lluosi 180 a -3 i gael -540.

$$\left(21600+\frac{-540}{5}x\right)x+60\left(12000-\left(120-\frac{3}{5}x\right)x\right)$$

Rhannu -540 â 5 i gael -108.

$$\left(21600-108x\right)x+60\left(12000-\left(120-\frac{3}{5}x\right)x\right)$$

Defnyddio’r briodwedd ddosbarthu i luosi 21600-108x â x.

$$21600x-108x^{2}+60\left(12000-\left(120-\frac{3}{5}x\right)x\right)$$

Defnyddio’r briodwedd ddosbarthu i luosi 120-\frac{3}{5}x â x.

$$21600x-108x^{2}+60\left(12000-\left(120x-\frac{3}{5}xx\right)\right)$$

Lluosi x a x i gael x^{2}.

$$21600x-108x^{2}+60\left(12000-\left(120x-\frac{3}{5}x^{2}\right)\right)$$

I ddod o hyd i wrthwyneb 120x-\frac{3}{5}x^{2}, dewch o hyd i wrthwyneb pob term.

$$21600x-108x^{2}+60\left(12000-120x-\left(-\frac{3}{5}x^{2}\right)\right)$$

Gwrthwyneb -\frac{3}{5}x^{2} yw \frac{3}{5}x^{2}.

$$21600x-108x^{2}+60\left(12000-120x+\frac{3}{5}x^{2}\right)$$

Defnyddio’r briodwedd ddosbarthu i luosi 60 â 12000-120x+\frac{3}{5}x^{2}.

$$21600x-108x^{2}[phone]x+60\times \frac{3}{5}x^{2}$$

Mynegwch 60\times \frac{3}{5} fel ffracsiwn unigol.

$$21600x-108x^{2}[phone]x+\frac{60\times 3}{5}x^{2}$$

Lluosi 60 a 3 i gael 180.

$$21600x-108x^{2}[phone]x+\frac{180}{5}x^{2}$$

Rhannu 180 â 5 i gael 36.

$$21600x-108x^{2}[phone]x+36x^{2}$$

Cyfuno 21600x a -7200x i gael 14400x.

$$14400x-108x^{2}+720000+36x^{2}$$

Cyfuno -108x^{2} a 36x^{2} i gael -72x^{2}.

$$14400x-72x^{2}+720000$$