SOLUTION: Factoring: a)16b^2c^2-4(b^2+c^2-a^2) b)(x^2+4y^2-20)^2-16(xy-4)^2 I have tried some ways but could not solve this

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Question 1119606: Factoring:
a)16b^2c^2-4(b^2+c^2-a^2)
b)(x^2+4y^2-20)^2-16(xy-4)^2
I have tried some ways but could not solve this

Answer by Alan3354(69443)   (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+4y^2-20)^2-16(xy-4)^2
Same here. Some "simplification" might be possible after using the difference of squares, but Step 1 is the difference of squares.
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Now each of the 4nomials can be factored.
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Other than knowing about the difference of squares, it's just careful bookkeeping.
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Look up difference of 2 cubes, also.

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