Question

which of the following is not a quadratic equation​

Answer 1

Step-by-step explanation:

A.(x−2)

2

+1=2x−1

x

2

−4x+4+1=2x−3

x

2

−4x+5−2x+3=0

x

2

−4x−2x+8=0

x

2

−6x+8=0

B. x(x+1)+8=(x−2)(x−2)

x

2

+x+8=x

2

−4x+4

5x+4=0

C.x(2x+3)=x

2

+1

2x

2

+3x=x

2

+1

x

2

+3x−1=0

D.(x−2)

3

=x

3

−4

x

3

−6x

2

+12x

2

−8=x

3

−4

−6x

2

+12x−4=0

option B is a linear equation, not a quadratic equation.

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