A) \[3{{p}^{2}}-3p+2\]
B) \[3{{p}^{2}}+3p+2\]
C) \[-3{{p}^{2}}+3p-2\]
D) \[3{{p}^{2}}-3p-2\]
Correct Answer: A
Solution :
Let the expression to be added is x. \[\Rightarrow 4{{p}^{2}}+5p+7+x=7{{p}^{2}}+2p+9\] \[\Rightarrow x=7{{p}^{2}}+2p+9-4{{p}^{2}}-5p-7\] \[\Rightarrow x=3{{p}^{2}}-3p+2\] is the required expression.You need to login to perform this action.
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