Question 49
Quadratic EquationsSolve the equation 3 + 5x − 2x2 = 0
- A.−1/2, −3
- B.2, 3
- C.−2, 3
- D.−1/2, 3
Show the answer and explanation
Answer: D (−1/2, 3)
Explanation
2x2 − 5x − 3 = (2x + 1)(x − 3) = 0, so x = −1/2 or 3.
Solve the equation 3 + 5x − 2x2 = 0
Answer: D (−1/2, 3)
2x2 − 5x − 3 = (2x + 1)(x − 3) = 0, so x = −1/2 or 3.