Question 22
Algebraic ExpressionsGiven that (2x − 1)(x + 5) = 2x2 − mx − 5, what is the value of m?
- A.11
- B.5
- C.−9
- D.−10
Show the answer and explanation
Answer: C (−9)
Explanation
(2x − 1)(x + 5) = 2x2 + 9x − 5. Comparing, −m = 9, so m = −9.
Given that (2x − 1)(x + 5) = 2x2 − mx − 5, what is the value of m?
Answer: C (−9)
(2x − 1)(x + 5) = 2x2 + 9x − 5. Comparing, −m = 9, so m = −9.