Question

Evaluate (30)3 +(20)3 –(50)3 using identities.

Answer 1

Answer:

1) a3 – b3 = (a – b) (a2 + ab + b2 ).

2) a3 + b3 = (a + b) (a2 - ab + b2 ).

Step-by-step explanation:

These are the identities which can be used for calculation..

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Answer 2

ANSWER:-

We know that the identity [(a^3+b^3-c^3)]

So, your math:-

(30)^3+(20)^3-(50)^3

=(30+20-50)^3

=[{50-50}]^3

=0^3

=0

Hence it's proved by the following identity.

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