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Question:

# Simplify: $[(7 y^2+3xy-9)$ - $(2 y^2+3xy-5)]$

A $[5 y^2-4]$
explanation

When subtracting polynomials the first step is to distribute the negative sign through the parentheses. This changes the sign on each term inside the parentheses:
$[7 y^2+3xy-9- 2y^2-3xy+5]$
Arrange like terms next to each other (optional):
$[7 y^2-2 y^2 +3xy-3xy-9+5]$
Combine like terms to compute the answer: $[5 y^2-4]$.

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Frankie Felix

1 year ago

Very easy to learn with this app

The Panter77

1 year ago

Great app it help me a lot

PYROROA 333

1 year ago

Pretty good for learning basic stuff. Just wish the equation would change up so you don't just remember the answer.