Algebramedium · Past Paper
If the roots of (k-1)x^2 - 10x + 3 = 0 are reciprocal, find k.
A4
B3
C2
D5
✓ Correct Answer: A — 4
Reciprocal roots means c = a. 3 = k - 1 → k = 4.
Share this question
More from Algebra
- Find the HCF of 4x^2y and 6xy^2.
- If the sum of roots of 2x^2 + kx + 8 = 0 is 0, then k is:
- Five years ago, a father's age was 7 times his son's age. Five years hence, the father's age will be 3 times his son's age. Find the father's present age.
- Factorize 4x^2 - 20x + 25.
- What is the slope of the line 3x + 4y = 12?