Question 452115: Factor x^3-8
I got the answer (x-2)(x^2+2x+4) but i don't know how
Please show me step by steps to get the answer. Thanks Answer by solver91311(24713) (Show Source):
I did this for you yesterday, but here it is again.
Use the factorization of the difference of two cubes:
And recall that .
For future reference, you can remember the sum and difference of two cubes thusly:
Use the mnemonic "San Diego Padres" to remember "Same sign, Different sign, Plus sign" to help you know which signs to put into the right hand side of the equation.
John
My calculator said it, I believe it, that settles it
