4x^2+13x+3=0
D=169-4*4*3
D=169-48=121
x=(-13+-11)/8
x=-3 или х=-1/4
4х^2+13x+3=4(x+3)(x+1/4) =(x+3)(4x+1)
4x^2+13x+3=0
D=169-4*4*3
D=169-48=121
x=(-13+-11)/8
x=-3 или х=-1/4
4х^2+13x+3=4(x+3)(x+1/4) =(x+3)(4x+1)