Question 49
Quadratic EquationsSolve: d2 − 4d − 96 = 0.
- A.d = 8, 12
- B.d = −8, −12
- C.d = −8, 12
- D.d = 8, −12
Show the answer and explanation
Answer: C (d = −8, 12)
Explanation
(d − 12)(d + 8) = 0, so d = 12 or d = −8.
Solve: d2 − 4d − 96 = 0.
Answer: C (d = −8, 12)
(d − 12)(d + 8) = 0, so d = 12 or d = −8.