that is where the line crosses the x axis or where y=0
0=-16x^2+22x+3 we gon do grouping ac method -16 times 3=-48
what 2 numbers multiply to get -48 and add to get 22 -2 and 24 0=-16x^2-2x+24x+3 group 0=(-16x^2-2x)+(24x+3) undistribute 0=-2x(8x+1)+3(8x+1) undistribute 0=(8x+1)(-2x+3) set eaqual to 0
