Taking the Square Root of Both Sides (3.2.1)

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Presentation transcript:

Taking the Square Root of Both Sides (3.2.1) December 9th, 2016

*When we solve equations for x, we typically are trying to find only real number solutions. Recall that real numbers are numbers that don’t contain the imaginary component .

Ex. 1: Solve each equation for x. b) c) d)

So how do you know when a quadratic equation has one, two, or no real solutions? How do you know when a quadratic equation has rational solutions?

Ex. 2: The surface area of a cube with sides of length x is given by Ex. 2: The surface area of a cube with sides of length x is given by . If the surface area is 80 square feet, what is the side length x? You may round your answer to the nearest hundredth, if necessary.