Are (a-3b)2 and a2-6ab-9b2 equal
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Answered by
1
NOoooooooo both r diff.
Answered by
11
Hey !!
( a - 3b)²
As we know that , ( a - b )² = a² + b² - 2ab
Therefore,
( a - 3b )²
=> (a)² + (3b )² - 2 a × 3b
=> a² + 9b² - 6ab
a² + 9b² - 6ab # a² - 9b² - 6ab [ Where # stand's for not equal ]
( a - 3b)²
As we know that , ( a - b )² = a² + b² - 2ab
Therefore,
( a - 3b )²
=> (a)² + (3b )² - 2 a × 3b
=> a² + 9b² - 6ab
a² + 9b² - 6ab # a² - 9b² - 6ab [ Where # stand's for not equal ]
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