Solve the equation 2x^2 + 8x - 1 = 0
by completing the square.
Give your answers correct to 2 decimal places

Which term best describes the association between variables a and b? no association a negative linear association a positive linear association a nonlinear association a scatterplot with an x axis labeled, variable a from zero to ten in increments of two and the y axis labeled, variable b from zero to one hundred forty in increments of twenty with fifteen points in a positive trend.

F(x)=x/2-2 and g(x)=2x^2+x-3 find (f+g)(x)

We just started the introduction into circles and i have no idea how to do this.