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In (x + a)(x + b), the coefficient of x is:
Aa - b
Ba / b
Ca + b
Da x b
Answer & Solution
Correct answer: C. a + b
1. Multiply out the two brackets.
2. The x terms are ax and bx.
3. Together they give (a + b) times x.
4. So the answer is a + b.
_Source: NCERT Class 9 Mathematics, Ch 4 'Exploring Algebraic Identities'_
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