Question

Select all of the following that are quadratic equations.​

Answer 1

x^2 -2x = 4x+1

2x^2 +12x = 0

9x^2 +6x -3=0

Explanation:

A quadratic equation has the highest power of x being squared

x^2 -2x = 4x+1

2x^2 +12x = 0

9x^2 +6x -3=0

These are all quadratic equations