Question

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

Answer 1

Answer:

x²-x=(-2)(3-x)

x²-x=-6+2x

x²-x-2x+6

x²-3x+6 yes

x³-4x²-x+1=(x-2)3

x³-4x²-x+1=3x-6

x³-4x²-x+1-3x+6

no

x²+3x+1-2x+4

x²+x+5

yes