Question

(За² + 2а - 2) - (a² - За +7) =​

Answer 1

Answer:

$3 {a}^{2} + 2a - 2 - {a}^{2} + 3a - 7 \\ 2 {a}^{2} + 5a - 9$

Answer 2

$\huge\mathbf\orange{\underline{\underline{Answer}}}$

$( {3a}^{2} + 2a - 2) - ( {a}^{2} - 3a + 7)$

$3 {a}^{2} + 2a - 2 - {a}^{2} + 3a - 7$

$3 {a}^{2} - {a}^{2} + 2a + 3a - 2 - 7$

$2 {a}^{2} + 5a - 9$