Question

Решите уравнение:
(x - 5)(х-5) = 5x^2 – (2x - 1)(2x + 1)

Answer 1

(x - 5)(х-5) = 5x^2 – (2x - 1)(2x + 1)
х^2-5x-5x+25=5x^2-4x2-2x+2x+1
x^2-10x-5x^2+4x^2=1-25
-10x=-24
х=2,4