Question

Докажите тождество: 6x^2+19x-7=(3x-1)(2x+7)

Answer 1

$6x^{2} +19x-7 = 6 x^{2}+21x-2x-7$
$6x^{2} +19x-7 = 6 x^{2} +19x-7$
0 = 0
ч.т.д.