Please find the cube of 1005 by using identities
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1015075125 is the cube of 1005
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we can write (1005)3as
(1000 +5 )3
by identity (a+b)3=a3+b3+3ab(a+b)
here a=1000,b=5
=(1000)3+(5)3+3×1000×5(1000+5)
=1000000000+125+15075000
=1015075125
so (1005)=1015075125
(1000 +5 )3
by identity (a+b)3=a3+b3+3ab(a+b)
here a=1000,b=5
=(1000)3+(5)3+3×1000×5(1000+5)
=1000000000+125+15075000
=1015075125
so (1005)=1015075125
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