shannonhausmann shannonhausmann

28-01-2015
Mathematics

contestada

Algebra 2

Solve: f(x)=x^2-9

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blackwelldavid blackwelldavid

28-01-2015

This problem is a difference of squares. So to solve this you want to factor it out so you get two numbers that multiple to -9 and add to 0. That would be -3 and 3

f(x)=(x-3)(x+3)

So your solution when you set f(x) to 0 would be -3 and 3.

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