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प्रश्न
Multiply the following:
(a2 – b2), (a2 + b2)
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उत्तर
We have,
(a2 – b2) and (a2 + b2)
∴ (a2 – b2)(a2 + b2) = a2(a2 + b2) – b2(a2 + b2)
= a4 + a2b2 – b2a2 – b4
= a4 – b4
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