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Mathematics
Jaydan Christensen
1 January, 20:22
Factor completely.
3x3 - 12x
+1
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2
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Ari Adams
1 January, 20:46
0
So 3x^3-12x
factor out the 3x in both
3x^3-12x = (3x) (x^2) - (3x) (4)
reverse distribute
(3x) (x^2-4)
x^2-4
difference of 2 perfect squares which is
z^2-t^2 = (z-t) (z+t) so
x^2-2^2 = (x-2) (x+2)
the factored out form is (3x) (x-2) (x+2)
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Nayeli Burgess
1 January, 22:44
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3x³ - 12x
3x (x²) - 3x (4)
3x (x² - 4)
3x (x² + 2x - 2x - 4)
3x (x - 2) (x + 2)
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