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28 October, 13:16

If A=3x^2+5x-6 and B=-2x-6x+7, then what is A-B

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  1. 28 October, 13:34
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    A=3x^2+5x-6

    B=-2x^2-6x+7

    A-B = (3x^2+5x-6) - (-2x^2-6x+7)

    remove parentheses

    A-B=3x^2+5x-6+2x^2+6x-7

    combine like terms

    A-B=5x^2+11x-13
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