Question 19
Quadratic EquationsIf α and β are the solutions to x2 + 3x − 10 = 0, find 1/α + 1/β
- A.−3/10
- B.3/10
- C.−10/3
- D.10/3
Show the answer and explanation
Answer: B (3/10)
Explanation
1/α + 1/β = (α + β)/(αβ) = (−3)/(−10) = 3/10.
If α and β are the solutions to x2 + 3x − 10 = 0, find 1/α + 1/β
Answer: B (3/10)
1/α + 1/β = (α + β)/(αβ) = (−3)/(−10) = 3/10.