Question

(7х-5)^2+67х-49х^2=-2 уровнени решать

Answer 1

$49 {x}^{2} - 70x + 25 + 67x - 49 {x}^{2} + 2 = 0 \\ - 3x = - 27 \\ x = 9$

Answer 2

49x^2-70x+25+67x-49x^2=-2
-3x+25=-2
-3x=-2-25
-3x=-27
x=9