Question

Perform the indicated operation by removing the parentheses and combining like terms.(-2x2 + 5) + (6x2 + 7)

Answer 1

Given the expression:

$\mleft(-2x^2+5\mright)+(6x^2+7)$

Removing the parentheses and combining like terms.

$\begin{gathered} =-2x^2+5+6x^2+7 \\ =-2x^2+6x^2+5+7 \\ \\ =4x^2+12 \end{gathered}$

so, the answer will be:

$4x^2+12$