Same chapter3 marksDifficulty: Medium
Find the values of k for which x2 + kx + 16 = 0 has equal roots.
Quadratic Equations
3 marksDifficulty: Medium
Solve x2 − 2x − 8 = 0 and verify the roots by substitution.
Original Khojo Papers practice question — not from a past board paper.
Answer
x = 4 or x = −2
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
(x − 4)(x + 2) = 0. Checking, 16 − 8 − 8 = 0 and 4 + 4 − 8 = 0, so both roots satisfy the equation.
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