#6.4 Polynomials and Polynomial functions
- (12-32) even
if you don't understand how to do a question, post the actual question with the directions.
Don't tell me that you don't understand #12.
Write: I don't understand #12. Factor: x^3 + 64.
I will log on periodically throughout the weekend to answer your questions.
Have a PG-13 weekend!
posted by msichan at
10/27/2006 12:16:00 PM
1 Comments:
hong,
#12:
factor x^3 + 64
this is a sum of 2 cubes
first, find a. a = the cube root of x^3. in other words, what times itself is equal to x to the third power? a is equal to whatever that is.
b is equal to the cube root of 64. in other words, what number times itself 3 times equals 64?
once you figure out a and b, just plug them into the formula:
(a+b)(a^2-ab+b^2)
hope that helps. if you require further assistance, just ask. post your answer and i will tell you if you've got it right or not.
By
msichan, at Saturday, October 28, 2006 8:50:00 PM
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