Question

if 3 raised to the power of 2x =243 find x write the working too

Answer 1

3^2x = 243
But 243 = 3^5
Therefore
3^2x = 3^5
Thus,
2x = 5
Because as the coefficients are equal then the powers will also be equal.
Thus,
x = 5/2 = 2.5.

Answer 2

2x=243
x=243÷2
⇒x=121.5 
is this correct