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16-12-2020
Mathematics

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Simplify: (4x2 + 21xy – 7y2) + (10x2 + 11y2 – 20).
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samanthavictoriadeli samanthavictoriadeli

16-12-2020

Ok so the answer is 8 + 21xy + 8y

Explanation:
U multiply and calculate then remove the opposites rewrite and calculate then remove the parentheses then u proceed to collect like terms

Hope this helps !!

Happy Christmas <33

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