Question

Solve for x: (81)^-4 + (729)^2-x = 3^8x​

Answer 1

Step-by-step explanation:

81^x+4=729^2x-7

We move all terms to the left:

81^x+4-(729^2x-7)=0

We get rid of parentheses

81^x-729^2x+7+4=0

We add all the numbers together, and all the variables

81^x-729^2x+11=0

We move all terms containing x to the left, all other terms to the right

81^x-729^2x=-11