Question

1) 3х (4+12х)-(6х-1) (6х+1)=11х

2) (х7) (х-7)-(3х-1) (х+1)=4-2х в 2-гому степені

Answer 1

1.
$12x + 36x ^{2} - 36 {x}^{2} - 6x - 6x = 11x \ 12x - 6x - 6x - 11x = 0 \ - 11x = 0 \ x = 0$