A) 100
B) 80
C) 60
D) 30
Correct Answer: A
Solution :
\[?=(7.5\times 7.5+37.5+2.5\times 2.5)\] \[=[{{(7.5)}^{2}}+2\times 7.5\times 2.5+{{(2.5)}^{2}}]\] \[={{[7.5+2.5]}^{2}}={{(10)}^{2}}=100\]You need to login to perform this action.
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