X^2-18X-42

Question

I NEED HELP WITH THE ANSWER

Answer 1

X^2-18X-42

Use the quadratic formula.

X = (18 ± √(18^2 – 4*1*(-42)))/(2*1)

X = (18 ± √(324 +168))/(2)

X = (18 ± √(324 +168))/(2)

X = (18 ± √(492))/(2)

X = 9 ± √(123)

Answer: X = 9 –  √(123), X = 9 + √(123)