Question

Найдите корень уравнения (5x-2)^2 - 25x^2=0

Answer 1

$(5x-2) ^{2} -25 x^{2} =0 \ 25 x^{2} +4-20x-25 x^{2} =0 \ 4-20x=0$

$\ -20x=-4 \ x=0.2$