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Need some problems factored?
I need these problems factored and if possible how you got the answers (numbers behind letters are powers. couldnt figure out how to put those in right)
x2-6xy-16y2
18x3-12x2-48x
16y2-16y+4
5xy2-20xy3
x4-2x-8
thanks!
1 Answer
- Roger the MoleLv 71 decade agoFavorite Answer
x2-6xy-16y2 = (x - 8y) (x + 2y)
18x3-12x2-48x
Factor out the common factor:
6x (3x2-2x-8)
Factor what remains in parentheses:
6x (x - 2) (3x + 4)
16y2-16y+4
Factor out the common factor:
4 (4y2-4y+1)
Factor what remains in parentheses:
4 (2y - 1) (2y - 1)
5xy2-20xy3
Factor out the common factor:
5xy2 (1 - 4y)
x4-2x-8 doesn't factor in rational numbers.
