A) 636
B) 576
C) 456
D) 386
Correct Answer: B
Solution :
When \[x=15\] and \[y=3,\] we have \[9\times {{(15)}^{2}}+49\times {{(3)}^{2}}-42\times 15\times 3\] \[=2025+441-1890=576\]You need to login to perform this action.
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