Question

Evaluate using identity:
198×198-102×102÷96

Answer 1

Answer:

(i) (198 × 198 – 102 × 102)/96 Using formula (a – b) (a + b) = a2 – b2 We get, (198 × 198 – 102 × 102)/96 = ((198)2 – (102)2)/96 = ((198-102) (198+102))/96 = (96 × 300)/96 = 300 (ii) 1.73 × 1.73 – 0.27 × 0.27 Using formula (a – b) (a + b) = a2 – b2 1.73 × 1.73 – 0.27 × 0.27 = (1.73)2 – (0.27)2 = (1.73-0.27) (1.73+0.27) = 1.46 × 2 = 2.92Read more on Sarthaks.com - https://www.sarthaks.com/633642/simplify-the-following-using-the-identities-i-198-198-102-102-96

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Answer 2

Answer:

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