The following is the graph of a quadratic friction, find ...
The following is the graph of a quadratic friction, find the value of x when y = 0
1, 2
1, 4
2, 3
1, 6
Correct answer is B
when y = 0, value of x = roots of the equation
x2 - 5x + 4 = 0
x = 1, 4 (see graph)
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