√m4=64 and m0, what is the value of cubic root of m?

Question

√m^4=64  and m>0, what is the value of cubic root of m?

A. 1 
B. 2 
C. 4 
D. 8 
E. 16

pushpitkc · Answer

Since  √m^4=64 , 
 m^2  will be equal to 64.
m can take value 8 or -8(which is eliminated as m>0)

Therefore, m=8
The cube root of m is 2(Option B)

mbaaspirant80 · Answer

√m4 = m2 = 64
that means m=8=2*2*2
so cube root of m = 2
hence b

TimeTraveller · Answer

\sqrt{m^{4}} = 64. 
Squaring on both sides, we get  m^{4} = 64^{2} 
So,  m^{2} = 64 , hence,  m = 8  (given:  m > 0 )

Cube root of 8 = 2. Ans - B.

sashiim20 · Answer

\sqrt{m^4}=64 m^{\frac{4}{2}} = 64 m^2 = 64 m = +8 or -8 Given m>0 . Therefore; m = 8 We need to find the value of Cubic root of m \sqrt {m} = \sqrt {8} = 2 Answer (B)... _________________ Please Press "+1 Kudos" to appreciate.

Abhishek009 · Answer

√m^4=64

So,  √m^2=8^2

Or,  m = 8

Hence,  ^3√m=2

Thus, answer will be (B) 2

MathRevolution · Answer

==> You get  √m^4=64=2^6, m^4=(2^6)^2=2^{12}.  Then, you get  m=(2^{12})^{\frac{1}{4}}=2^3 , and from 3√m=3 \sqrt{2^3} =2, the answer is B.

Answer: B

JeffTargetTestPrep · Answer

Let’s solve for m:

√(m^4) = 64

(m^4)^(½) = 64

m^2 = 64

|m| = √64

|m| = 8

m = 8 or m = -8

Since m > 0, m = 8.

Thus, the cube root of m is 2.

Answer: B

√m4=64 and m>0, what is the value of cubic root of m?

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