The general form of quadratic equation which is solved by using the quadratic formula is
a x² + b x + c = 0
Where: a, b and c are constants
by comparing the previous formula with the given options
The
most appropriate equations are
0.25x² +0.8x − 8 =0
3x² − 4x = 15
so, the correct answer is options 2 and 3
