Quadratic equation or not?

^{3m + 8 = 15}

• QUADRATIC EQUATION

• NOT A QUADRATIC EQUATION

x² - 5x +10 =0

• QUADRATIC EQUATION

• NOT QUADRATIC EQUATION

12 - 4x = 0

• QUADRATIC EQUATION

• NOT QUADRATIC EQUATION

2t² - 7t = 12

• QUADRATIC EQUATION

• NOT QUADRATIC EQUATION

6 - 2x + 3x² = 0

• QUADRATIC EQUATION

• NOT QUADRATIC EQUATION

25 - r² = 4r

• NOT QUADRATIC EQUATION

• QUADRATIC EQUATION

3x(x - 2) = -7

• NOT QUADRATIC EQUATION

• QUADRATIC EQUATION

 $\frac{1}{2}\left(h-6\right)\ =\ 0$  

• NOT QUADRATIC EQUATION

• QUADRATIC EQUATION

 $\left(x\ +\ 2\right)^2\ =\ 0$  

• NOT QUADRATIC EQUATION

• QUADRATIC EQUATION

 $\left(w-8\right)\left(w+5\right)=14$  

• NOT QUADRATIC EQUATION

• QUADRATIC EQUATION