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Algebra 18 Online
OpenStudy (anonymous):

81c^4d^4-16t^4

OpenStudy (anonymous):

why would that not be 9c^2d^2+4t^2 9c^2d^2 -4t^2

OpenStudy (anonymous):

it could be a difference of cubes

OpenStudy (anonymous):

well scratch that

OpenStudy (anonymous):

your right

OpenStudy (anonymous):

it is what you said it was

OpenStudy (anonymous):

now just apply difference of squares to the 9c^2d^2-4t^2

OpenStudy (anonymous):

book says answer is (9c^2d^2+4t^2)(3cd+2t)(3cd-2t)

OpenStudy (anonymous):

why did the second equation get broken down?

OpenStudy (anonymous):

|dw:1350775938394:dw|

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