1. Выделите полный квадрат: x2−2x−15 x2+6x−16 x2−8x+12 x2−4x−12 x2−8x−9 x2+12x+11 х2-4х-60

Question

1. Выделите полный квадрат:
x2−2x−15
x2+6x−16
x2−8x+12
x2−4x−12
x2−8x−9
x2+12x+11
х2-4х-60

Answer 1

=(x-1)²-16
=(x+3)²-25
=(x-4)²-4
=(x-2)²-16
=(x-4)²-25
=(x+6)²-25
=(x-2)²-64