Question on: WAEC Mathematics - 2015
Find the equation whose roots are (\frac{3}{4}) and -4
A
4x2 - 13x + 12 = 0
B
4x2 - 13x - 12 = 0
C
4x2 + 13x - 12 = 0
D
4x2 + 13x + 12 = 0
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Correct Option: C
Let x = (\frac{3}{4}) or x = -4
i.e. 4x = 3 or x = -4
(4x - 3)(x + 4) = 0
therefore, 4x2 + 13x - 12 = 0
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