x1≈ -2.6
x2≈ 1.2
Объяснение:
(2x + 6)(7 - 4x) = (2 - 1)(х + 1) + 15
14x-8x+42-24x=2x+2-x-1+15
14x-8x^2-24x-2x+x=15-1+2-42
-8x^2-11+26=0
8x^2+11-26=0
x1≈ -2.6
x2≈ 1.2
Объяснение:
(2x + 6)(7 - 4x) = (2 - 1)(х + 1) + 15
14x-8x+42-24x=2x+2-x-1+15
14x-8x^2-24x-2x+x=15-1+2-42
-8x^2-11+26=0
8x^2+11-26=0
x1≈ -2.6
x2≈ 1.2