what should be added to 7x^2+8x+10 to get 15x^2-x+7?
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8x²–9x–3 should be added to 7x²+8x+10 to get 15x²–x+7.
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Answered by
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Answer:
8x^2-9x-3
Step-by-step explanation:
7x^2+8x+10 + A = 15x^2- X+7
A = 15x^2 - x + 7 -7x^2-8x-10
A= 15x^2-7x^2 -x-8x + 7-10
A= 8x^2 -9x -3
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