JAMB - Mathematics (1990 - No. 13)

If f(x - 4) = x2 + 2x + 3, Find, f(2)
6
11
27
51

Explanation

f(x - 4) = x2 + 2x + 3

To find f(2) = f(x - 4)

= f(2)

x - 4 = 2

x = 6

f(2) = 62 + 2(6) + 3

= 36 + 12 + 3

= 51

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