(5х - 4)² + (2х - 4)(2х + 4) + 95х =
= (5х)² - 2 *5х * 4 + 4² + (2х)² - 4² + 95х =
= 25х² - 40х + 4х² + 95х =
= 29х² + 55х
при х = -2
29 *(-2)² + 55*(-2) = 29 * 4 - 110 = 116 - 110 = 6
(6х - 4)(6х + 4) + (3х - 4)² + 112х =
= (6х)² - 4² + (3х)² - 2*3х *4 + 4² + 112х =
= 36х² + 9х² - 24х + 112х =
= 45х² + 88х
при х = - 2
45 * (-2)² + 88 * (-2)= 45 *4 - 176 = 180 - 176 = 4