evaluate the following using suitable identities (99.7)^2
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Answered by
2
Answer:
(997)2
= (1000−3)2
= (1000)2−2×1000×3+(3)2 [Using, (a−b)2=a2−2ab+b2]
= 1000000−6000+9
= 1000009−6000
= 994009
Step-by-step explanation:
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Answered by
10
Step-by-step explanation:
(99.7)^2
= (100 -0.3)^2
= 100² + 0.3² - 2× 100 × 0.3 [(a-b)²=a²+b²-2ab]
=10000 + 0.09 - 60
= 9940.09
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