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2 years ago

I need help on this homework

Mathematics

1 answer:

wel2 years ago

8 0

(-9x²-2x) - (-9x²-3x) = (-9x²-2x) +(9x²+3x) = -9x²-2x+9x²+3x = (-9x²+9x²)+(-2x+3x) = x

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