subtract 3×^2-6×-4 from 5+×-2×^2.
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Answer:
5x^2+7x+9
Step-by-step explanation:
5+x-2x^2-(3x^2-6x-4)
=5+x-2x^2-3x^2+6x+4
=x+6x-2x^2-3x^2+4+5
=-5x^2+7x+9
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