(a+b+2)(a+b-2) eching

$$( a + b + 2 ) ( a + b - 2 )$$

Baholash

$$\left(a+b\right)^{2}-4$$

Yechim qadamlari

Ko‘paytirish qoida yordamida turli kvadratlarga aylantirilishi mumkin: \left(a-b\right)\left(a+b\right)=a^{2}-b^{2}, bu yerda a=a+b va b=2.

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

\left(p+q\right)^{2}=p^{2}+2pq+q^{2} binom teoremasini \left(a+b\right)^{2} kengaytirilishi uchun ishlating.

$$a^{2}+2ab+b^{2}-2^{2}$$

2 daraja ko‘rsatkichini 2 ga hisoblang va 4 ni qiymatni oling.

$$a^{2}+2ab+b^{2}-4$$

Kengaytirish

$$a^{2}+2ab+b^{2}-4$$

Yechim qadamlari

Ko‘paytirish qoida yordamida turli kvadratlarga aylantirilishi mumkin: \left(a-b\right)\left(a+b\right)=a^{2}-b^{2}, bu yerda a=a+b va b=2.

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

\left(p+q\right)^{2}=p^{2}+2pq+q^{2} binom teoremasini \left(a+b\right)^{2} kengaytirilishi uchun ishlating.

$$a^{2}+2ab+b^{2}-2^{2}$$

2 daraja ko‘rsatkichini 2 ga hisoblang va 4 ni qiymatni oling.

$$a^{2}+2ab+b^{2}-4$$