Asked by Anonymous
How would 3x^2-27y^2 be factored completely?
Answers
Answered by
bobpursley
isnt it the difference of two squares?
3(x^2-9y^2)=3(x-3y)*(x+3y)
3(x^2-9y^2)=3(x-3y)*(x+3y)
Answered by
Anonymous
Yes but isnt the difference of two squares just one technique to factor polynomials?
Answered by
bobpursley
Of course. If one technique works to factor a polynomial, it is factored.
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