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प्रश्न
Simplify:
6a2 + (2a2 − a2) − (a2 − b2)
बेरीज
उत्तर
6a2 + (2a2 − a2) − (a2 − b2)
= 6a2 + a2 − a2 + b2
= 6a2 + b2
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Concept of Substitution
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