Question

Упростить выражение 3x^2-4x-(4+4x^2+7x)

Answer 1

$3 {x}^{2} - 4x - (4 + 4 {x}^{2} + 7x) = \\ = 3 {x}^{2} - 4x - 4 - 4 {x}^{2} - 7x = \\ = - {x}^{2} - 11x - 4$