Question

What is the answer? ​

Answer 1

x=-9,9

Explanation:

`(x^(2) +9)/(x+9) =(90)/(x+9) \\`

Multiply each side by (x+9) to cancel out the denominators

`x^2+9=90`

Subtract 9 from each side

`x^2=81\\√(x^2) =√(81)`

Square root each side to cancel out the x^2

`x=(+)/(-) 9`