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Besides factorisation, a quadratic can be solved by the method of:
ALong polynomial division
BTrial substitution
CCompleting the square
DCross multiplication
Answer & Solution
Correct answer: C. Completing the square
1. The equation is rewritten as a perfect square.
2. Then square roots are taken.
3. This is completing the square.
_Source: NCERT Class 10 Mathematics, Chapter 4, Quadratic Equations._
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