Hi. How would go about factoring Thanks
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what about expanding back out to check
Originally Posted by deltaxray Hi. How would go about factoring Thanks If you're factorising over the Real Numbers, it does not factorise. If you're factorising over the Complex Numbers, change it to a difference of two squares. . You may be able to use a sum or difference of two cubes factorisation now as well...
You can factorise it to: But unfortunately I cant remember the rule for doing this
Last edited by Stroodle; November 30th 2009 at 09:17 AM. Reason: fixed error
Originally Posted by Stroodle You can factorise it to: But unfortunately I cant remember the rule for doing this You have a typo. The (x + 1) should be (x^2 + 1). See below. Originally Posted by deltaxray Hi. How would go about factoring Thanks using the sum of two cubes formula . Now note that using the difference of two squares formula.
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