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Question
The values of a and b if 4x4 – 24x3 + 76x2 + ax + b is a perfect square are
Options
100, 120
10, 12
– 120, 100
12, 10
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Solution
– 120, 100
Explanation;
Hint:
Since it is a perfect square
a + 120 = 0
a = – 120
b – 100 = 0
b = 100
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