Find the solutions (roots) of a quadratic equation using the graphing calculator. Consider the following examples: Solve: Since this equation is set equal to zero, the roots will be the locations where the graph crosses the x-axis (if the roots are real numbers). (Remember that the x-axis is really just y = 0.) 1. Set. 2. Use the ZERO command to find the roots -- 2nd TRACE (CALC), #2 zero.
The cost of glasses and how to save. Glasses can cost anywhere between $10 for reading glasses at Walmart to $500+ if you opt for an expensive designer pair. Asking how much glasses cost is a little like asking how much your wife should spend on a new dress. It depends on whether she's shopping at Kohl's or Neimen Marcus, Target or Anthropologie!
1 Glasses can cost just $8 or up to $600 for those without insurance. 2  For name brands, prices can range between $50 and $1,000 or more. 3  At an eye doctor's clinic, prices for eyeglasses will vary depending upon the frames, lenses and region of the country. Prices vary tremendously, depending upon the type of frame, lenses and type of retailer. 2  Glasses can cost just $8 or up to $600 for those without insurance. 3  For name brands, prices can range between $50 and $1,000 or more.