Home
Class 7
MATHS
If 2^x=128, what is 2^(x+1) ?...

If `2^x=128`, what is `2^(x+1)` ?

Text Solution

Verified by Experts

`2^x=128` `therefore 2^x+1=2^x xx 2=128 xx 2=256 .`
Promotional Banner

Similar Questions

Explore conceptually related problems

a) If |x-2|=3 , then what is x ? b) If |x-2|=|x-8| , then what is |x-2|+ |x-8| ? c) If |x-2|+|x-8|=6 , then find the integer values of x?

What is int1/(9+x^2)dx=?

If P(x)=2x^2-3x+1 ,then What number is P(1) ?

a) Find 'p(1)' if p(x)=x^2+2 x+5 b) If (x-1) is a factor of x^2+2 x+k , what number is 'k ?'

If 1, log _(4) ( 2 ^(1-x) + 1), log _(2) ( 5.2 ^(x) + 1) are in AP, then the value of x is :

If y=(tan^(-1)x)^2 , show that (x^2+1)^2y_2+2x(x^2+1)y_1=2 .

If (x-1) is a factor of the polynomial 5 x^3-4 x^2+x-k , what number is 'k' ?

Show that cos 2 x=cos ^(2) x-sin ^(2) x=2 cos ^(2) x-1=1-2 sin ^(2) x=(1-tan ^(2) x)/(1+tan ^(2) x)

If f (x) = (alpha x)/( x+1) , x ne -1 , for what value of alpha is f[f(x)] = x? a) sqrt2 b) -sqrt2 c)1 d)-1

If (x-1) is a factor of x^2+2x+k , What number is k?