Question

Simplify using identities:
(10)^2 + (20)^2

Answer 1

Answer:

2^10+2^20

= 20+40

=60

By using the identity , the answer will be 60.

Answer 2

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=10^2 + 20^2

=a^2 + b^2 = (a − b)^2 + 2ab

=(10-20)^2 + 2x10 x 20

=-10^2 +400

=100 + 400

= 500

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