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प्रश्न
Subtract the following expressions:
–2a2 – 2b2 from –a2 – b2 + 2ab
बेरीज
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उत्तर
We have, (–a2 – b2 + 2ab) – (–2a2 – 2b2)
= –a2 – b2 + 2ab + 2a2 + 2b2
On combining the like terms,
= –a2 + 2a2 – b2 + 2b2 + 2ab
= a2 + b2 + 2ab
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