Expression ( a+b)^2 = ?

A ) a^2 + b^2

B ) a^2 -2ab +b^2

C ) a^2 +2ab +b^2 ✅

D ) a^2 + b^2+4

Explanation: The formula of (a+b) whole square says (a + b)2 = a2 + 2ab + b2.
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