Question

find the squares of each of the following if it's given:
(a + b)^2=a^2+ 2ab+b^2 and (a-b)^2=a^2-2ab+b^2
1. 73
2. 99
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Answer 1

Answer:

73^2

⇒ (70 +3)^2

⇒ 4900 + 9 + 2×70×3

⇒ 4909 + 420

⇒ 5329 (Ans)

99^2

= (100 - 1)^2

⇒ 100^2 + 1 - 2.1.100

⇒ 10000 + 1 - 200

⇒ 9801(Ans)

Answer 2

Step-by-step explanation:

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