Answer
$-10x^2y^2+4x^2+3$.
Work Step by Step
$9x^2y^2-3x^2-5$ ...(1)
$-6x^2y^2-x^2-1$ ...(2)
$5x^2y^2+2x^2-1$ ...(3)
Add (2) and (3).
$=(-6x^2y^2-x^2-1)+(5x^2y^2+2x^2-1)$
Clear the parentheses.
$=-6x^2y^2-x^2-1+5x^2y^2+2x^2-1$
Add the like terms.
$=-x^2y^2+x^2-2$ ... (4)
Subtract (1) from (4).
$=(-x^2y^2+x^2-2)-(9x^2y^2-3x^2-5)$
Clear the parentheses.
$=-x^2y^2+x^2-2-9x^2y^2+3x^2+5$
Add the like terms.
$=-10x^2y^2+4x^2+3$.
