Question

(-x²+9x-2) - (9x²-4x+4)

Answer 1

Solución: -10x²+13x-6

Solución paso a paso.

$\\(-x^{2} +9x-2) - (9x^{2} -4x+4)\\-x^{2} +9x-2 -9x^{2} +4x-4\\-x^2-9x^2+9x+4x-2-4\\-10x^2+9x+4x-2-4\\-10x^2+13x-2-4\\-10x^2+13x-6$