Question 314398
9x^2-30xy+25y=
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Not factorable the way you have posted it.
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3x^2(3x)(5y)+(5y)^2=
Common Factor: 5y
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= (5y)(9x^3+5y)
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(3x-5y)^2
= (3x-5y)(3x-5y)
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Use FOIL:
F: 9x^2
O:-15xy
I:-15xy
L:25y^2
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Combine to get:
9x^2 - 30xy + 25y^2
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Cheers,
Stan H.
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