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Math

posted by on .

can you please help me solve this quadadratic equasionby factoring :
x^2-8x+16 would this be the right way
8x^3+16 to start

  • Math - ,

    OH NO, you cannot add unlike terms

    x^2 - 8x + 16
    =(x-4)(x-4)

    check it by expanding

    BTW, you did not have an "equation".

    did you have x^2 - 8x + 16 = 0 ?

    then (x-4)(x-4)=0
    x = -4

  • Math - ,

    I obviously meant x = 4 (not -4)

    (that "oldtimers" syndrome hitting again)

  • Math - ,

    The factors of x^2 - 8x + 16 are (x-4)(x-4)
    You did not write an equation.
    If you had written x^2 -8x + 16 = 0, which IS an equation, the answer would be x = 4. That would be the only answer, since both factors are zero when x = 4.

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