left(a+bright)=a+b^3-2left(a+bright)+a+b-9 eching

$$\left( a+b \right) =a+ { b }^{ 3 } -2 \left( a+b \right) +a+b-9$$

a uchun yechish

$$a=b^{3}-2b-9$$

Yechim qadamlari

-2 ga a+b ni ko'paytirish orqali distributiv xususiyatdan foydalanish.

$$a+b=a+b^{3}-2a-2b+a+b-9$$

-a ni olish uchun a va -2a ni birlashtirish.

$$a+b=-a+b^{3}-2b+a+b-9$$

0 ni olish uchun -a va a ni birlashtirish.

$$a+b=b^{3}-2b+b-9$$

-b ni olish uchun -2b va b ni birlashtirish.

$$a+b=b^{3}-b-9$$

Ikkala tarafdan b ni ayirish.

$$a=b^{3}-b-9-b$$

-2b ni olish uchun -b va -b ni birlashtirish.

$$a=b^{3}-2b-9$$