Expand : (4x- 5y) whole square
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Answered by
12
( 4x-5y )² = (4x)² + (5y)² -2(4x)(5y)
as , ( a-b )² = a² + b² - 2ab
=> ( 4x-5y )² = 16x² + 25y² - 40xy
hope this helps
as , ( a-b )² = a² + b² - 2ab
=> ( 4x-5y )² = 16x² + 25y² - 40xy
hope this helps
Answered by
5
(4x-5y)² = (4x)² -2(4x)(5y) + (5y)²......... ( [a-b]² = a² - 2ab + b² )
= 16x² - 40xy + 25y²
= 16x² - 40xy + 25y²
AnjaliRaut:
Hope it helps!!!
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