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Question

The multiple roots of x53x45x3+27x232x+12=0 are

A
1, 2
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B
2, 3
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C
3, 4
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D
4, 1
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Solution

The correct option is A 1, 2
x53x45x3+27x232x+12=0
Let f(x)=x53x45x3+27x232x+12
f(x)=0
f(x)=0
5x412x315x2+54x32=0
Now, we will check the option that satifies f(x)=0 and f'(x)=0
Option A satisfies.

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