SOLUTION: how do you factor 9-49z^2

Algebra.Com
Question 336913: how do you factor 9-49z^2
Answer by scott8148(6628)   (Show Source): You can put this solution on YOUR website!
this is the difference of squares

it factors into the sum and difference of the squareroots

(3 + 7z)(3 - 7z)

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