use appropriate property to find ( a+b+c)^2 -(a-b-c) ^2= 4a( b+ c)
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Hi friend!!
We know that x²-y²=(x+y)(x-y)----(1)
given,
( a+b+c)²-(a-b-c)²
Using the property (1), we get
=(a+b+c+a-b-c)(a+b+c-a+b+c)
=2a(2b+2c)
=4a(b+c)
Hence proved.
I hope this will help you ;)
We know that x²-y²=(x+y)(x-y)----(1)
given,
( a+b+c)²-(a-b-c)²
Using the property (1), we get
=(a+b+c+a-b-c)(a+b+c-a+b+c)
=2a(2b+2c)
=4a(b+c)
Hence proved.
I hope this will help you ;)
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