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March 28, 2017

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CAN SOMEONE PLEASE HELP ME WITH MY SQUARE ROOT AND FOILING PLEASE?

  • Please ask specific question - ,

    FOIL is just distributive property of multiplication
    (a+b)(c+d) = ac + ad + bc + bd

    proof with distributive property:
    (a+b)(c+d) = a(c+d) + b(c+d)
    = ac + ad + bc + bd

  • INEED MATH HELP BADLY PLEASE HELP - ,

    [ãv(2x+2) - ãv(x-3)][ãv(2x+2) - ãv(x-3)] = 4

  • INEED MATH HELP BADLY PLEASE HELP - ,

    I do not understand your special symbols but perhaps they are radical signs?
    If so then
    [ sqrt(2x+2) - sqrt (x-3) ] [sqrt(2x+2) -sqrt (x-3) ] = 4

    sqrt (a) sqrt (a) = a
    so
    (2x+2) - 2 sqrt (2x+2) sqrt(x-3) + (x-3) = 4
    or
    3 x -2 sqrt (2x+2) sqrt(x-3) = 5
    or
    (3 x -5)/2 = sqrt (2x^2 -4 x - 6)
    square both sides
    (9 x^2 -30 x +25)/4 = 2 x^2 -4 x - 6
    or
    9 x^2 - 30 x + 25 = 8 x^2 - 16 x - 24
    or
    x^2 -14 x + 49 = 0
    (x-7)(x-7) = 0
    x = 7

  • INEED MATH HELP BADLY PLEASE HELP - ,

    Thank you.

  • INEED MATH HELP BADLY PLEASE HELP - ,

    x- -1 when x=3

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