SOLUTION: Factoring: a)16b^2c^2-4(b^2+c^2-a^2) b)(x^2+4 y^2-20)^2-16(xy-4)^2

Question 1119604: Factoring:
a)16b^2c^2-4(b^2+c^2-a^2)
b)(x^2+4 y^2-20)^2-16(xy-4)^2
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Factoring:
a)16b^2c^2-4(b^2+c^2-a^2)
??
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b)(x^2+4 y^2-20)^2-16(xy-4)^2
Form:: Difference of squres::
= [(x^2+4y^2-20)-4(xy-4)]
= [x^2-4xy+4y^2-4]
= [(x-20y)^2-4]
= [(x-20y-2)(x-20y+2)]
Cheers,
Stan H.
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