TayariHub
Mathematics NULL Medium
Question

If the roots of 2x² − 5x + b = 0 are in the ratio 2 : 3, find the value of b.

A
3
✓ Official correct answer
B
4
C
5
D
6

Community credibility

Registered members can vote for the answer they believe is correct today and explain why. If the facts change after an election or news event, suggest a new option so others can vote it up.

A
3
Official option

No member explanations yet for this option.

B
4
Official option

No member explanations yet for this option.

C
5
Official option

No member explanations yet for this option.

D
6
Official option

No member explanations yet for this option.

Explanation

Roots 2k and 3k: 5k = 5/2 ⇒ k = 1/2. Product 6k² = b/2 ⇒ b = 3.

Related Questions

Q
Probability of something in interest rate of XXX?
Medium · Mathematics
Q
80% of 700 = ________?
Medium · Mathematics
Q
If P is 5 times as large as Q, by what percent is Q less than P?
Medium · Mathematics
Q
Who was Blaise Pascal?
Medium · Mathematics