Question

Which of the following is not quadratic equation? *

1 point

x(2x + 3) = x²+ 1

x(x + 1) + 8 = (x + 2) (x – 2)

(x+2)³=x³-4

(x–2)²+ 1 = 2x -3

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Answer 1

Answer:

x(x+1) +8=(x+2) (x-2) is not a quadratic equation

Step-by-step explanation:

x(x+1)+8=(x+2)(x-2)

x^2+ x + 8 = x^2 -2x+2x - 4

x+8=-4

x+8+4=0, which is not a quadratic equation

Answer 2

Answer:

x(x+1) + 8 = (x+2) (x-2) is not a quadratic equation