Advertisements
Advertisements
Question
The value of x − yx-y when x = 2 and y = −2 is
Options
18
-18
14
-14
Advertisements
Solution
Given `x- y ^(x-y)`
Here `x = 2, =-2`
By substituting in `x- y ^(x-y)` we get
`x-y^(x-y) = 2-(-2)^(2-(-2))`
`= 2-(-2)^(2 +2))`
`= 2-(-2)^4`
= -14
The value of `x- y ^(x-y)`is – 14
Hence the correct choice is d .
APPEARS IN
RELATED QUESTIONS
Simplify the following:
`(5xx25^(n+1)-25xx5^(2n))/(5xx5^(2n+3)-25^(n+1))`
Find the value of x in the following:
`(sqrt(3/5))^(x+1)=125/27`
If `3^(x+1)=9^(x-2),` find the value of `2^(1+x)`
The product of the square root of x with the cube root of x is
The seventh root of x divided by the eighth root of x is
If 9x+2 = 240 + 9x, then x =
If x = \[\sqrt[3]{2 + \sqrt{3}}\] , then \[x^3 + \frac{1}{x^3} =\]
If \[\sqrt{2} = 1 . 4142\] then \[\sqrt{\frac{\sqrt{2} - 1}{\sqrt{2} + 1}}\] is equal to
If \[\sqrt{2} = 1 . 414,\] then the value of \[\sqrt{6} - \sqrt{3}\] upto three places of decimal is
The positive square root of \[7 + \sqrt{48}\] is
