Question

इस ए क्यूब इक्वल टू 117 प्लस बी क्यूब एंड इक्वल टू 3 प्लस बी डन द वैल्यू ऑफ ए प्लस बी एस ​

Answer 1

Answer: Your answer is,^3+ b^3

Step-by-step explanation: Let us see the verification of a cube plus b cube formula here. To prove or verify that a3 + b3 = (a + b) (a2 - ab + b2) we need to prove here LHS = RHS. Lets begin with the following steps.

LHS = a3 + b3

On Solving RHS side we get,

= (a + b) (a2 - ab + b2)

On multiplying the a and b separately with (a2 - ab + b2) we get

= a (a2 - ab + b2) + b(a2 - ab + b2)

= a3 - a2b + ab2 + a2b - ab2 + b3

= a3 - a2b + a2b + ab2- ab2 + b3

= a3 - 0 + 0 + b3

= a3 + b3

Hence proved, LHS = RHS

Hope it will help you. Thanks