Question on: JAMB Mathematics - 2010

If x * y = x + y2, find then value of (2*3)*5

A
36
B
25
C
11
D
55
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Correct Option: A

x * y = x + y2

2 * 3 = 2 + 32

= 2 + 9

= 11

(2 * 3) * 5 = 11 + 52

= 11 + 25

= 36

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