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Which of these is NOT an algebraic method of solving a pair of linear equations?
Acompleting the square method
Bsubstitution method
Celimination method
Dcross-multiplication method
Answer & Solution
Correct answer: A. completing the square method
1. The standard algebraic methods are substitution, elimination and cross-multiplication.
2. **Completing the square** is a method for quadratic equations, not linear pairs.
3. The graphical method is separate from these algebraic ones.
_Source: Karnataka SSLC (KSEEB) Class 10 Mathematics, Ch3 'Pair of Linear Equations in Two Variables', §3.3-3.4_
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