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math

posted by on .

factor each of the following:
a)x^2+10x+25
b)x^2+16x+28
c)x^2-9x+14

  • math - ,

    x^2+10x+25=(x+5)*(x-5)

    Becouse:

    (x+5)*(x-5)=x*x+5*x-5*x-25=x^2+5x-5x+25=x^2+25


    x^2+16x+28=(x+2)*(x+14)

    Becouse:

    (x+2)*(x+14)=x*x+2*x+14x+28=x^2+2x+14x+28=x^2+16x+28

    x^2-9x+14=(x-7)*(x-2)

    Becouse:

    (x-7)*(x-2)=x*x-7x-2x+2*7=x^2-9x+14

  • math - ,

    i don't realy get it still like i do get it but at the same time i don't :( sorry im being an thik head lol

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