Question

resolver eliminando os parenteses

(5x²-2x+3) - (3x² -7x+5)=

Answer 1

$(5x^2-2x+3) - (3x^2 -7x+5)=5x^2-2x+3 - 3x^2 +7x-5=\\ \\ \boxed{2x^2+5x-2}$

Answer 2

5X2-2X+3-3X2+7X-5=0
2X2-5X-2=0