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21 April, 08:08

If A=3x^2 + 5x - 6 and B = - 2x^2 - 6x + 7 than A - B equals ... ?

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  1. 21 April, 12:07
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    5x^2 + 11x - 13

    Step-by-step explanation:

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

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

    Distribute the minus sign

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

    Combine like terms

    = 5x^2 + 11x - 13
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