Simplify the algebraic expression 15 x y - 13 + 4 x + 3 y + x y + 21
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Hello!
We have the following expression:
Let's multiply and simplify it, look:
We multiply a*a*a, so we can rewrite it as a³. The same with b*b as b².
So, the answer in the simplified form is:
6a³ + 4b²