Whats 42x-6x(cubed) fractionbar 36x?

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Whats 42x-6x(cubed) fractionbar 36x?

Its about simplifying rational expressions

2007-05-30 15:50:31 · 2 answers · asked by tina 1 in Education & Reference ➔ Homework Help

2 answers

42x - 6x^3
-------------
36x

divide top and bottom by 6

7x - x^3
----------
6x

or

(x)(7 - x^2)
--------------
6x

If x < > 0 (not equal to 0)
then divide top and bottom by "x"

7 - x^2
---------
6

Note: To check your work for errors,
try plugging in x = 2 into both
the original and the final equation.
If the values are not equal,
the equation is not reduced properly.

2007-05-30 15:59:25 · answer #1 · answered by Nghiem E 4 · 0⤊ 0⤋

42x-6x^2 / 36x

6x(7-x) / 36x

(7-x) / 6x

2007-05-30 22:54:09 · answer #2 · answered by ... 3 · 0⤊ 1⤋