How do you factor the expression #x^4+216x#?
1 Answer
Dec 21, 2015
Factor out the common factor and then look for a familiar form.
Answer is :
Explanation:
Factoring :
Always look for a common factor, here it's an
Lucky for us, 216 is a perfect cube:
So it's a sum of cubes and we can use the formula:
You can check that the last quadratic doesn't factor.
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