Find the sum and express it in simplest form.
(-2y3 + 2y2 - 9) + (-4y3 + 5y2 + 7)
1 answer:
Answer:
-6y^3+7y^2-2
Step-by-step explanation:
(-2y^3+2y^2-9)+(-4y^3+5y^2+7)
-2y^3-4y^3+2y^2+5y^2-9+7
-6y^3+7y^2-2
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