Решите уравнения 1) - х²+3 х+55 = (х+7) ² 2) (х-7) ²=2 х²+11 х+23

1) - х²+3 х+55 = (х+7) ²

-х²+3x+55=x²+14x+49

-x²+3x+55-x²-14x-49=0

-2x²-11x+6=0

D=121-4 * (-2) * 6=169

x1 = (11+13) / (-4) = - 6

x2 = (11-13) / (-4) = 0.5

2) (x-7) ²=2x²+11x+23

x²-14x+49=2x²+11x+23

x²-14x+49-2x²-11x-23=0

-x²-25x-26=0

D=625-4 * (-1) * (-26) = 521

x1 = (25+√521) / (-2) ≈-23.9

x2 = (25-√521) / (-2) ≈-1.08