Adding 7x to both sides, we get:
x^2 + 7x + 10 = 0
Using the quadratic formula:
x = (-b ± √(b^2 - 4ac)) / 2a
We have a = 1, b = 7, and c = 10. Substituting these values, we get:
x = (-7 ± √(7^2 - 4(1)(10))) / 2(1)
x = (-7 ± √9) / 2
x = (-7 ± 3) / 2
x = -5 or x = -2
Therefore, the answer is option B: x = -2, 5.
Use the quadratic formula to solve the equation. If necessary, round to the nearest hundredth.
x2 + 10 = –7x
A. x = 2, 5
B. x = –2, 5
C. x = 2, –5
D. x = –2, –5
1 answer