Question

Check whether x(x + 1) + 8 = (x + 2)(x − 2) is a quadratic equations.​

Answer 1

Answer:

Given that: x(x+1)+8=(x+2)(x−2)

By simplifying we get

x

2

+x+8=x

2

−4

x

2

−x

2

+x+8+4=0

x+12=0

It is not of the form ax

2

+bx+c=0

The variable x is only in the first degree.

∴ It is not a quadratic equation.