Agar a=-9 boʻlsa, 216+108a+18a^2+a^3 ifodaning qiymatini toping.

$216+108a+18a^2+a^3=6^3+3\cdot6^2\cdot a+3\cdot6\cdot a^2+a^3=(6+a)^3$. $a=-9$ da $(6-9)^3=(-3)^3=-27$.

Manba: UZBMB namunaviy test topshiriqlari (2022, mutaxassislik)