Question

Which values best approximate the solutions of x squared -4x -3.5 = 0.

Answer 1

X^2-4x-3.5=0

x=(-b+ or - squareroot(b^2-4ac))/2a

x= (4+ or - squareroot((-4)^2-4(1)(-3.5)))/2
x=(4+ squareroot(30))/2
x=(4- squareroot(30))/2
x=4.738612788
x=-.7386127875