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Question

Is the following equation a quadratic equation?
(x+2)3=x34

A
Yes
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B
No
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C
Ambiguous
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D
Data insufficient
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Solution

The correct option is A Yes
Given equation is (x+2)3=x34
x3+23+3×x×2(x+2)=x34
x3+8+6x(x+2)=x34
x3+8+6x2+12xx3+4=0
6x2+12x+12=0
Comparing it with the standard form of quadratic equation x2+bx+c=0,a0.
Here, a=6
Thus, it is a quadratic equation.

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