A) 9
B) 4
C) 2
D) 1
Correct Answer: A
Solution :
(a): Just put the value of 'a' & 'b' Or Write \[{{a}^{2}}+{{b}^{2}}+2ab={{\left( a+b \right)}^{2}}\] Now put \[a=2,b=1\] \[={{\left( 2+1 \right)}^{2}}=9\].You need to login to perform this action.
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