Question

find the sum or difference. write your answer in standard form.
$(2x + 3x^2) - (7 - 8x^2)$

Explanation:

Step1: Eliminar paréntesis

$2x + 3x^2 - 7 + 8x^2$

Step2: Agrupar términos semejantes

$3x^2 + 8x^2 + 2x - 7$

Step3: Sumar términos semejantes

$11x^2 + 2x - 7$

Answer:

$11x^2 + 2x - 7$