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How do you factor #18b^3-36b^2-9#?

1 Answer

sankarankalyanam

Jul 2, 2018

#color(blue)(=> 9 * (2b^3 - 4b^2 - 1)#

Explanation:

#18b^3 - 36b^2 - 9#

#=> 9 * 2 * b^3 - 9 * 2 * 2 * b^2 - 9#

#=> 9 * (2b^3 - 4b^2 - 1)#

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