evaluate..plzz give the whole process of sum...this is from the chapter special products
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Answer of (I) 9,409 and
(II) 25m² + 1/25m² - 2
Step-by-step explanation:
- ( 97 )² = ( 100 - 3 ) ²
Identity (a - b)² = (a)² + (b)² - 2ab
a = 100 , b = 3
(100-3)² = (100)² + (3)² - 2×100×3
= 10000 + 9 - 600
= 9,409
2. ( 5m - 1/5m )² = (5m)²+(1/5m)² -
2×5m×1/5m
= 25m² + 1/25m² - 10m/5m
= 25m² + 1/25m² - 2
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