SOLUTION: Im having trouble factoring polynomials. Can you please teach me how. Heres one of my homework problems: 36m2-81

Question 447729: Im having trouble factoring polynomials. Can you please teach me how. Heres one of my homework problems: 36m2-81
Found 2 solutions by josmiceli, MathLover1:
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Notice that is a perfect square, and is a
perfect square, so you can write them like this:

Also, is a perfect square
---------------
A general rule of algebra is:

In your case, you have:

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The above rule is worth remembering. Hope this helps
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!

...look closely, ....you have ...since as
you also have ...since .now, you have the difference of two squares and apply the rule for factoring the difference of two squares

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