Question

Find the value of x
3^x + 3^3-x = 12​

Answer 1

Step-by-step explanation:

x is equal to 1,2

simple iit trick

Answer 2

Answer:

3^x + 3^3-x = 12

3^x+3^3-x=3^2+3

By comparing power, we get

x(3-x)=2(1)

3x-x^2=2

x^2-3x+2=0

x^2-2x-x+2=0

x(x-2)-1(x-2)=0

(x-1)(x-2)=0

x=1,x=2

Let's check it

x=1 put it

3^1+3^3-1=12

3+9=12

12=12

x=2

Put it

3^2+3^3-2=12

9+3=12

12=12

So x=1,x=2 are the solution of the equation