147k views
4 votes
(1/x-4)(1/x-4)(1/x-4)

can you show me the work please. I looked up the answer online the answer is 1/(x-4)^3 but why is it that? like idk the steps for it

2 Answers

4 votes

you are multiplying 3 algebraic fractions together


(1)/(x-4) ×
(1)/(x-4) x
(1)/(x-4)

multiply the numerators together, that is 1 × 1 × 1 = 1

multiply the denominators together, that is

(x - 4 ) × (x - 4 ) × (x - 4 ) = (x - 4)³

thus the product of the multiplication is


(1)/((x-4)^(3) )


User Oldskool
by
6.6k points
3 votes
the answer is 1/(x-4)^3 because if you see in the equation they gave the same x-4 variable. As three of the same variable are being multiplied it adds the ^3 to the x-4. As (x-4) is all being divided by 1 it creates the solution 1/(x-4)^3. I hope this helps.
User Marcus K
by
6.0k points
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