If `3^x` = 243 then find the value of `3^x-3`.

If x^2-4x+3=1 then find the value of x.

Find the value of 3x^2 if x=-1

If 2^(x+1)=3^(1-x) then find the value of x.

In triangle ABC ,DE | | AB and AD= 9 + 8x, DC = 3 + x, CB = 4 + 3x, EC = x. Then find the value of x.

Find the value of x if 3x+45=34

If x=7+4sqrt3 then find the value of x+(1)/(x)

Find the value of 4x^(3) if x=-1

Find the value of x if x/2-1=x/3+4

If x ^(2) -x-6 and x ^(2) + 3x -18 have a common factor (x -a) then find the value of a.

If f(2x + 3y, 2x-3y)=4xy , then find the value of f(x,y)