can someone explain to me how they got in the numerator? problem: first step: I know they used the perfect cube formula, but why use 16 and 4. and where did the come from?
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Originally Posted by vd853 can someone explain to me how they got in the numerator? problem: first step: I know they used the perfect cube formula, but why use 16 and 4. and where did the come from? Hi vd853, The general factorization model for the differernce of two cubes is: Your numerator could be re-written as Using this and the model, we come up with
Thanks! did not know about the difference formula.
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