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Which operations on expressions were learnt in earlier classes?
AAdd and simplify
BAlter and subtract
CAlter and simplify
DAdd and subtract
Answer & Solution
Correct answer: D. Add and subtract
1. Multiplication is the new work here.
2. Two operations were already known.
3. In the earlier classes, we have also learnt how to add and subtract algebraic expressions.
4. So the answer is add and subtract.
_Source: NCERT Class 8 Mathematics, Ch 8 'Algebraic Expressions and Identities'_
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