JAMB - Mathematics (2010 - No. 7)
If x * y = x + y\(^2\), find then value of (2*3)*5
36
25
11
55
Explicació
x * y = x + y\(^2\)
2 * 3 = 2 + 3\(^2\)
= 2 + 9
= 11
(2 * 3) * 5 = 11 + 5\(^2\)
= 11 + 25
= 36
2 * 3 = 2 + 3\(^2\)
= 2 + 9
= 11
(2 * 3) * 5 = 11 + 5\(^2\)
= 11 + 25
= 36