evaluate (11)^3 + (14)^3 - (25)^3
please solve it !!
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Hey mate..
========
Given,
(11)^3 + (14)^3 - (25)^3........(1)
Now by using the identity in Eq.(1) we get ,
a^3 + b^3 = ( a + b ) ( a^2 - ab + b^2 )
= ( 11 + 14 ) { (11) ^2 - 11×14 + (14)^2 } -(25)^3
= 25 ( 121 - 154 + 196 ) - 15625
= 25 × 163 - 15625
= 4075 - 15625
= -11550
#racks.
========
Given,
(11)^3 + (14)^3 - (25)^3........(1)
Now by using the identity in Eq.(1) we get ,
a^3 + b^3 = ( a + b ) ( a^2 - ab + b^2 )
= ( 11 + 14 ) { (11) ^2 - 11×14 + (14)^2 } -(25)^3
= 25 ( 121 - 154 + 196 ) - 15625
= 25 × 163 - 15625
= 4075 - 15625
= -11550
#racks.
VivekGupta4040:
nyc ans thnk u racks
anytime bro
^_^
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