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Question

43x5+7x3+413=0

Hence, find the value of p, if 3p2x+1=0.

A
x=2 and p=2
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B
x=8 and p=5
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C
x=6 and p=3
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D
x=4 and p=7
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Solution

The correct option is C x=8 and p=5
43x5+7x3+413=0
129x+355x+6515=0
129x+355x+65=0
14x=112
x=8
Now,
3p2x+1=0
3p2(8)+1=0
3p=15
p=5

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