3A - 5 B minus C whole square
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Answered by
22
Heya !!
We have :
( 3a - 5b - c )²
=> { 3a + ( -5b ) + (-c) }²
=> (3a)² + (-5b )² + (-c)² + 2(3a ) (-5b ) + 2 (-5b ) ( -c ) + 2 (-c ) ( 3a ).
=> 9a² + 25b² + c² - 30ab + 10bc - 6ca [ Answer ]
We have :
( 3a - 5b - c )²
=> { 3a + ( -5b ) + (-c) }²
=> (3a)² + (-5b )² + (-c)² + 2(3a ) (-5b ) + 2 (-5b ) ( -c ) + 2 (-c ) ( 3a ).
=> 9a² + 25b² + c² - 30ab + 10bc - 6ca [ Answer ]
sinetra:
pls can you help me solve more sums
Answered by
9
Hello!
(3a - 5b - c)²
= { 3a + (- 5b) + (- c) }²
= (3a)² + (- 5b)² + (- c)² + 2.(3a).(- 5b) + 2.(- 5b).(- c) + 2.(- c).(3a)
= 9a² + 25b² + c² - 30ab + 10bc - 6ac
Cheers!
(3a - 5b - c)²
= { 3a + (- 5b) + (- c) }²
= (3a)² + (- 5b)² + (- c)² + 2.(3a).(- 5b) + 2.(- 5b).(- c) + 2.(- c).(3a)
= 9a² + 25b² + c² - 30ab + 10bc - 6ac
Cheers!
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