Question 50
PolynomialsIf (x + 2) is a factor of x2 + Px − 10, find the value of P.
- A.3
- B.−3
- C.7
- D.−7
Show the answer and explanation
Answer: B (−3)
Explanation
If (x + 2) is a factor, x = −2 makes the expression zero: 4 − 2P − 10 = 0, so P = −3.
If (x + 2) is a factor of x2 + Px − 10, find the value of P.
Answer: B (−3)
If (x + 2) is a factor, x = −2 makes the expression zero: 4 − 2P − 10 = 0, so P = −3.