x1=1
x2=-0.5
4x ^ 2 = (2x + 3)(x - 4) + 6x + 13
4x² = 2x²+3x-8x-12 +6x+13
2x²-x-1=0
d=1+4*2*1=9
x1=(1+√9)/4 = 4/4=1
x2=(1-√9)/4 = -2/4=-0.5
x1=1
x2=-0.5
4x ^ 2 = (2x + 3)(x - 4) + 6x + 13
4x² = 2x²+3x-8x-12 +6x+13
2x²-x-1=0
d=1+4*2*1=9
x1=(1+√9)/4 = 4/4=1
x2=(1-√9)/4 = -2/4=-0.5