Becky1979
contestada

PLEASE HELP, Don’t know how to solve.

Solve the equation by graphing. X^2 +2x +1 =0
First, graph the associated parabola by plotting the vertex and four additional points, two on each side of the vertex. Then, use the graph to give the solution(s) to the equation. If there is more than one solution, separate them with commas.

Solution (s) : x = _____

Respuesta :

irspow
Let's just put it in vertex form so we know what it is

y=x^2+2x+1

y-1=x^2+2x

y-1+1=x^2+2x+1

y=(x+1)^2

So the vertex is (-1, 0), and since the coefficient is 1 is positive this vertex is the absolute minimum for the parabola.

So plot points for x={-3,-2,0,1} to get

(-3, 4),(-2, 1),(-1, 0),(0, 1),(1, 4)

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