How to factor x^2+16?

NetherCraft 0

I know that x^2-16 is a perfect square but +16 will not factor. I believe there is a formula similar to the cube root formula but not sure? Maybe I am just over thinking this. Thanks for the help

9 Answers

  • (x+4)(x-4)

  • X 2 16

  • Factor X 2-16

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    RE:

    How to factor x^2+16?

    I know that x^2-16 is a perfect square but +16 will not factor. I believe there is a formula similar to the cube root formula but not sure? Maybe I am just over thinking this. Thanks for the help

  • Use the quadratic equation even though you will get soem imaginary number

    Remember when using the formula

    a=1

    b=0

    c=16

  • There are no REAL distinct roots for that. If you were to subtract 16, you would be taking a negative square root, which is not allowed. If you did, you would be getting into a branch of mathematics called imaginary numbers (i). For your purposes, there are no roots.

  • you need to think what time +16 and add or subtract 0

    (4)(4)= 16

    +4+4= 8

    This is case they will be give you image number. That’s not real number.

    (x^2-16)

    it is work because

    (-4)(4)= -16

    -4+4=0

  • this is a trick question. The answer is that it can’t factor further so it is undefined.

  • If you are aware of i

    where i =sqrt(-1)

    then the roots are (x+4i) and (x-4i)

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