Question

Which of the following is not a quadratic equation?
option
1. x2-2x=(-2x)(3-x)
2. x³-4x²-x+1=(x-2)³
3. x²+3x+1=(x-2)²
4. x²+1=x(1-x) ​

Answer 1

Answer:

option c is not quadratic

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Answer 2

Answer:

Option 3

Step-by-step explanation:

x²+3x+1=x²-4x+4

x2 get cancelled

so its is not a quadratic equation