help solve problems
3/6+71
(11x^2 +3x+19)+(6x^2-18x-8)
(-2^2-9x+17)-(16x^2+17x-1)
-2xy(3xy^3- 5xy+7y^2)
solve the equation
4e-4=2
10+5e=17
given polynmial and one of its factors find the remaining factors of the polynomial
16x^3 -144x^2 -81x +729; x-9
Math help for midterm exam?
2012-01-16 8:03 pm
回答 (1)
2012-01-16 11:24 pm
✔ 最佳答案
given polynmial and one of its factors find the remaining factors of the polynomial16x^3 -144x^2 -81x +729; x-9
Divide the polynomial by the given factor:
(16x^3 -144x^2 -81x +729) / (x-9) = 16x^2 - 81
Since 16x^2 = (4x)^2 and 81 = 9^2 use the rule for factoring the difference of squares:
(4x + 9) (4x - 9)
So altogether:
16x^3 -144x^2 -81x +729 = (x - 9) (4x + 9) (4x - 9)
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