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If 3^(x-y)=27, and 3^(x+y) = 243, then x...

If `3^(x-y)=27,` and `3^(x+y) = 243`, then `x` is equal to a. `0` b. `2` c. `4` d. `6`

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RS AGGARWAL-SURDS AND INDICES-All Questions
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  2. If a ,\ b ,\ c are positive real numbers, then sqrt(a^(-1)b)\ xx\ sqrt...

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  3. If 3^(x-y)=27, and 3^(x+y) = 243, then x is equal to a. 0 b. 2 c. 4 d....

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  4. If x^y=y^x, then (x/y)^(x//y) is equal to a. x^(y//x) b. x^(x/y-1) c. ...

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  5. If 4^(x+y)=1\ and \ 4^(x-y)=4, then the values of x and y respectively...

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  6. If 2^(2x-1)+4^x=2^(x-1/2)+2^(x+1/2), then x equals a. 1/2 b. 2/3 ...

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  7. If 3^(2x-y)=3^(x+y)=sqrt27 , the value of y is a. 1/2 b. 3/4 c. 1/4 d....

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  8. If 3^x=5^y=45^z , then a. 2/z=1/y-1/x b. 2/y=1/x-1/z c. 2/x=1/z-1/y d....

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  16. If x^(1//3)+y^(1//3)=z^(1//3), then {(x+y-z)^3+27 x y z} equals a. 0 b...

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