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Question

Find the roots of the following equation applying quadratic formula.
4x2+43x+3=0


A

32 and 32

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B

32 and 32

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C

438 and 32

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D

338 and 32

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Solution

The correct option is A

32 and 32


4x2+43x+3=0
On comparing this equation with ax2+bx+c=0, we get
a=4,b=43 and c=3
By using quadratic formula, we get
x=b±b24ac2a
x=43±(43)24×4×32×4
x=43±48488
x=43±08
x=438
x=32

Thus, the given quadratic equation has equal roots.


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