Draw the following inequality on a graph: x^2+4x+1<-2

First we must ensure the equation is in a form that is easy for us to plot!This means we equate the quadratic to 0 by shifting the -2 to the other side. We do this by adding +2 to both sides.Now, we draw the equation as if there is no inequality; Draw it as if there is an equals sign. This will become apparent in a little while. We know from solving it that x = -3 or x = -1. Thus when we plot the equation, the curved shape of the quadratic equation intersects the x axis (when y=0) at -3 and -1.Now, we needed to plot the INEQUALITY on the graph, not the equation. Thus, we sub in the sign again.x^2+4x+1<-2x^2+4x+3=0x^2+4x+3 < 0This statement means the equation must be less than 0. Well, we already know the equation is also in the form (x+3)(x+1) = 0(x+3)(x+1) < 0On the graph when we plot the quadratic, we see the region that satisfies this statement is the small area between the curve and the grid!

SA
Answered by Saad A. Maths tutor

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