Question

If 2 is added to the square of an integer, the result is 7 less than 10 times that integer. Find the integer(s). (Enter your answers as a comma-separated list. Simplify your answer completely.)

Answer 1

let the integer be x.


`x^(2) + 2 = 10x - 7`

`x^(2) - 10x + 9 = 0`
Solve quadratic equation:
x=9 or x=1