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Math

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if a^2-b^2=10 and a-b=2 what is the vlaue of a+b

  • Math - ,

    a^2 - b^2 factors into (a - b)(a + b)

    (a - b)(a + b) = 10
    If a-b = 2, then

    2(a+b) = 10
    a+b = 5

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