Question

(13ab+5^2)-(15ab+7a^2-3a)-(-2ab+a^2)​

Answer 1

Resposta:

$-8a^2+3a+25$

Explicação passo-a-passo:

$\left(13ab+5^2\right)-\left(15ab+7a^2-3a\right)-\left(-2ab+a^2\right)\\\\13ab+5^2-\left(15ab+7a^2-3a\right)-\left(-2ab+a^2\right)\\\\13ab+25-\left(7a^2+15ab-3a\right)-\left(a^2-2ab\right)\\\\13ab+25-15ab-7a^2+3a-\left(-2ab+a^2\right)\\\\13ab+25-15ab-7a^2+3a+2ab-a^2\\\\-7a^2-a^2+13ab-15ab+2ab+3a+25\\\\-8a^2+13ab-15ab+2ab+3a+25\\\\-8a^2+3a+25$