WAEC - Mathematics (1998 - No. 2) | ExamPlay

WAEC - Mathematics (1998 - No. 2)

What value of k makes the given expression a perfect square ? m\(^2\) - 8m + k = 0

2

4

8

16

64

Giải thích

Take half the coefficient of m and square it
=> (-8/2)2 = k = 16

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