Question

(9^x-4)(9^3x+2)=9^10

Answer 1

Answer: x=3

Explanation:

`\displaystyle\\(9^(x-4))(9^(3x+2))=9^(10)\\\\9^(x-4+3x+2)=9^(10)\\\\9^(4x-2)=9^(10)\\\\4x-2=10\\\\4x-2+2=10+2\\\\4x=12`

Divide both parts of the equation by 4:

`x=3`