Solve. Solving Quadratic Equations by Taking Square Roots.

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Presentation transcript:

Solve.

Solving Quadratic Equations by Taking Square Roots

Solving with Square Roots 1.Get x 2 or binomial squared by itself 2.Take the square root of BOTH sides of the equals sign 3.Don’t forget the  sign 4.Simplify

Solve by Taking Square Roots

Falling Objects! Use h = -16t 2 + h 0 Height of the object after it has fallen # of seconds after the object is dropped Object’s initial height

Example The tallest building in the USA is in Chicago, Illinois. It is 1450 ft. tall. How long would it take a penny to drop from the top of the building to the ground?

Application Problem #2 For a period of 48 months, the average monthly operating costs for a small business C (in dollars) is approximated by the model C=0.55t where t is the number of months. During which month was the average operating cost $1430?

Homework Practice Sheet