SOLUTION: How do I factor the trinomial and GCF of..
x^2-4xy-77y^2
I started with (x-) (x-)
I don't know what to do next.
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Question 439938: How do I factor the trinomial and GCF of..
x^2-4xy-77y^2
I started with (x-) (x-)
I don't know what to do next.
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Key things to notice are;
(1)
The fact that the signs have the pattern
tells me that the factors will look like (with coefficients)
and that the of the factoring will be greater than the
to give me the middle term of the equation.
(2)
The fact that and tells me where the
in the middle term comes from.
--------------------
With these observations, I can try to factor it:
Notice the has to have the (-) sign, and
the difference of and has to be
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