SOLUTION: use rational exponents to write ^3√x * ^5√7x choose from: a. ^15√7x8 b. 343x c. ^15√5,764,801x^16 d. ^15√343x^8 Solve √x+10=-5 a. x

Algebra ->  Square-cubic-other-roots -> SOLUTION: use rational exponents to write ^3√x * ^5√7x choose from: a. ^15√7x8 b. 343x c. ^15√5,764,801x^16 d. ^15√343x^8 Solve √x+10=-5 a. x      Log On


   

Question 482109: use rational exponents to write ^3√x * ^5√7x
choose from:
a. ^15√7x8
b. 343x
c. ^15√5,764,801x^16
d. ^15√343x^8

Solve
√x+10=-5
a. x=____
b. There is no solution
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
use rational exponents to write ^3√x * ^5√7x
= x^(1/3)*(7x)^(1/5)
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= x^(5/15)*(7x)^(3/15)
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= [x^5*343x^3)^(1/15)
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= [343x^8](1/15)
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Answer: d
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a. ^15√7x8
b. 343x
c. ^15√5,764,801x^16
d. ^15√343x^8
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Solve
√(x+10)=-5
a. x=____
b. There is no solution
----
Answer:
b
Because sqrt(A) is never negative.
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Cheers,
Stan H.
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