Question

(a²-a-1)(a²-a+1) калай болады хелп​

Answer 1

$( {a}^{2} - a - 1)( {a}^{2} - a + 1) = ( {a}^{2} - a)^{2} - 1 = {a}^{4} - 2 {a}^{3} + {a}^{2} - 1$