Решите уравнение (x-7)^2=2x^2+11x+23

Question

Решите уравнение (x-7)^2=2x^2+11x+23

Answer 1

X^2 - 14x + 49 = 2x^2 + 11x + 23
x^2 + 25x - 26 = 0
D = 25^2 - 4*(-26) = 625 + 104 = 729
x1 = (-25-27)/2 = -26
x2 = (-25+27)/2 = 1