Question

If a3-b3 = 56 and a-b = 2, then what is the value of a2+b2 ?
A) 12 B) 20 C) 28 D) 32

Answer 1

Answer:

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Answer 2

Answer:

b) 20

Explanation:

if we keep

a=4 and

b=2

then the two conditions in the question get satisfied.

therefore according to question:-

a^2+b^2

=4^2+2^2

=20