2x^2-9x+4
a=2 b=-9 c=4
D=-9^2-4*2*4=81-32=49=7^2
x1=-2+7/4=5/4
x2=-2-7/4=-9/4=-3/2
2x^2 - 9x + 4 = (2x - 1)(x - 4)
2x^2-9x+4
a=2 b=-9 c=4
D=-9^2-4*2*4=81-32=49=7^2
x1=-2+7/4=5/4
x2=-2-7/4=-9/4=-3/2
2x^2 - 9x + 4 = (2x - 1)(x - 4)