5[(6-z)^2-5] eching

$$5 [ ( 6 - z ) ^ { 2 } - 5 ]$$

Kengaytirish

$$5z^{2}-60z+155$$

Yechim qadamlari

\left(a-b\right)^{2}=a^{2}-2ab+b^{2} binom teoremasini \left(6-z\right)^{2} kengaytirilishi uchun ishlating.

$$5\left(36-12z+z^{2}-5\right)$$

31 olish uchun 36 dan 5 ni ayirish.

$$5\left(31-12z+z^{2}\right)$$

5 ga 31-12z+z^{2} ni ko'paytirish orqali distributiv xususiyatdan foydalanish.

$$155-60z+5z^{2}$$

Baholash

$$5\left(\left(6-z\right)^{2}-5\right)$$

Yechim qadamlari

\left(a-b\right)^{2}=a^{2}-2ab+b^{2} binom teoremasini \left(6-z\right)^{2} kengaytirilishi uchun ishlating.

$$5\left(36-12z+z^{2}-5\right)$$

31 olish uchun 36 dan 5 ni ayirish.

$$5\left(31-12z+z^{2}\right)$$

5 ga 31-12z+z^{2} ni ko'paytirish orqali distributiv xususiyatdan foydalanish.

$$155-60z+5z^{2}$$