Question

(-5x2 – 10x – 7y + 2) + (3x2 – 4 + 7x)

Answer 1

$(-5x^{2} - 10x - 7y + 2) + (3 x^{2} - 4 + 7x)$

$-5x^{2} - 10x - 7y + 2 + 3 x^{2} - 4 + 7x$

$-5 x^{2} +3 x^{2} -10x+7x -7y+2-4$

$-2 x^{2} -3x-7y - 2$