D=x(8x-7)-(7x-8)x eching

$$D = x ( 8 x - 7 ) - ( 7 x - 8 ) x$$

D uchun yechish

$$D=x\left(x+1\right)$$

Yechim qadamlari

x ga 8x-7 ni ko'paytirish orqali distributiv xususiyatdan foydalanish.

$$D=8x^{2}-7x-\left(7x-8\right)x$$

7x-8 ga x ni ko'paytirish orqali distributiv xususiyatdan foydalanish.

$$D=8x^{2}-7x-\left(7x^{2}-8x\right)$$

7x^{2}-8x teskarisini topish uchun har birining teskarisini toping.

$$D=8x^{2}-7x-7x^{2}+8x$$

x^{2} ni olish uchun 8x^{2} va -7x^{2} ni birlashtirish.

$$D=x^{2}-7x+8x$$

x ni olish uchun -7x va 8x ni birlashtirish.

$$D=x^{2}+x$$

x uchun yechish (complex solution)

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

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

x uchun yechish

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

$$x=\frac{\sqrt{4D+1}-1}{2}\text{, }D\geq -\frac{1}{4}$$