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Question

Find the roots of quadratic equation
4x2+9+12x=81

A
-3, 6
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B
-3, -6
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C
3, 6
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D
3, -6
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Solution

The correct option is D 3, -6
4x2+981+12x=0
4x272+12x=0
x218+3x=0
(x3)(x+6)=0
x=3 and x=6

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