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Expanding (a + b + c)2 gives how many squared terms?
ANine
BTwelve
CThree
DSeven
Answer & Solution
Correct answer: C. Three
1. Each of the three letters is squared once.
2. The rest of the expansion is cross terms.
3. So there are three squared terms, a2, b2 and c2.
4. The answer is three.
_Source: NCERT Class 9 Mathematics, Ch 4 'Exploring Algebraic Identities'_
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