(r^2-5)^2= eching

$$( r ^ { 2 } - 5 ) ^ { 2 } =$$

Baholash

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

Yechim qadamlari

\left(a-b\right)^{2}=a^{2}-2ab+b^{2} binom teoremasini \left(r^{2}-5\right)^{2} kengaytirilishi uchun ishlating.

$$\left(r^{2}\right)^{2}-10r^{2}+25$$

Daraja ko‘rsatkichini boshqa ko‘rsatkichga oshirish uchun, darajalarini ko‘paytiring. 2 va 2 ni ko‘paytirib, 4 ni oling.

$$r^{4}-10r^{2}+25$$

Kengaytirish

$$r^{4}-10r^{2}+25$$

Yechim qadamlari

\left(a-b\right)^{2}=a^{2}-2ab+b^{2} binom teoremasini \left(r^{2}-5\right)^{2} kengaytirilishi uchun ishlating.

$$\left(r^{2}\right)^{2}-10r^{2}+25$$

Daraja ko‘rsatkichini boshqa ko‘rsatkichga oshirish uchun, darajalarini ko‘paytiring. 2 va 2 ni ko‘paytirib, 4 ni oling.

$$r^{4}-10r^{2}+25$$