college algebra

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explain why (x + y)2= x2 + y2

  • college algebra -

    If you are telling me that
    (x+y)^2 = x^2 + y^2
    That is not true
    (x+y)^2 = x^2 + 2 x y + y^2
    as you can see by multiplying
    (x+y)(x+y) = x(x+y) + y(x+y) =x^2 + xy + xy + y^2

  • college algebra -

    Now if you mean
    2 (x + y) = 2 x + 2 y
    that is simply the distributive property of multipication.

  • college algebra -

    solc for v

    [\sqrt;[6v-2]]=[\sqrt;[9v-8]]

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