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प्रश्न
a2 – b2 = (a + b) ______.
उत्तर १
a2 – b2 = (a + b) (a – b).
Explanation:
We have, a2 – b2 = (a + b)(a – b) ...[∵ a2 – b2 = (a + b)(a – b)]
उत्तर २
a2 – b2 = (a + b) (a – b).
Explanation:
Let (a2 – b2) = (a + b)x
⇒ `x = (a^2 - b^2)/(a + b)`
= `((a + b)(a - b))/(a + b)`
= a – b
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