What is the answer to 5x expo 2 plus 500 equals 844.45?

5x^(2) + 500 = 844.45

Subtract '500' from both sides.

5x^(2) = 344.45

Divide both sides by '5'

x^(2) = 344.45 / 5 = 68.89

Square root both sides

x = +/-sqrt(68.89) = +/- 8.3 (Ther answer)