Question

17a-2(3a-4)^2-65a при a=✓15

Answer 1

$17a - 2(9 {a}^{2} - 24a + 16) - 65a = 17a - 18 {a}^{2} + 48a - 32 - 65a = - 18 {a}^{2} - 32 = - 18 \times 15 - 32 = - 270 - 32 = - 302$

Answer 2

фоточка тебе в помощь ;)