Question

Socorro podem me ajudar.

Answer 1

Explicação passo-a-passo:

22) $(m-n)x^{2} + (3m+2n)x +(2n-p) = 5x-1\\\\ m-n = 0\\3m+2n = 5\\2n - p = -1\\\\m=n\\5m = 5 \\ m = 1, n=1\\\\2.1 - p = -1\\p = 3$

23)$(2x+3)(-4x+5) + 3x^{2} -5x+4\\-8x^{2} +10x-12x+15+3x^{2}-5x+4\\P(x) = -5x^{2} -7x+19$