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Question
The number of points of intersection of the quadratic polynomial x2 + 4x + 4 with the X axis is
Options
0
1
0 or 1
2
Solution
1
Explanation;
Hint:
(x + 2)2 = 0 ⇒ (x + 2) (x + 2) = 0
x + 2 = 0 or x + 2 = 0 ⇒ x = – 2 or x = – 2
Number of points of intersection is 1 ...(both the values are same)
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