10.7 - 1 625 5 2 = x Vertical Motion Formula(you don’t...

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10.7 Using the Quadratic Formula
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Warm Up: Solve each quadratic using a different method (Square Root, Graphing, or Factoring). Sketch the graph of the related function. 1) 2) ( 29 ( 29 0 1 5 2 3 = - + x x 0 100 2 2 = - - x
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Continued 3) 4) 0 25 2 = - x 0 40 5 6 2 = - + x x
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Objectives 1) To use the quadratic formula when solving quadratic equations 2) To choose an appropriate method for solving a quadratic equation
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When all other methods fail use the quadratic formula: If , then 0 2 = + + c bc ax a ac b b x 2 4 2 - ± - = Memorize this formula!!
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Solve using the quadratic formula. 1) 0 8 2 2 = - - x x Could we have solved this using another method?
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Solve using the quadratic formula. 1) 117 4 2 = - x x
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Solve using the Quadratic Formula 1) 0 2 5 3 2 = - + - x x
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Solve using the quadratic formula
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Unformatted text preview: 1) 625 5 2 = x Vertical Motion Formula (you don’t need to have this memorized for the test) A football player kicks a ball with an initial upward velocity of 38.4ft/s from a starting height of 3.5ft. The path of the ball is modeled by the equation: . How long will the ball be in the air? c vt t h + +-= 2 16 5 . 3 4 . 38 16 2 + +-= t t h A few more questions on the ball… When will the ball hit the ground? Where will the ball hit the ground? What is the maximum height of the ball? When will the ball reach its maximum height? Homework p550 # 1-15 odd, 16, 17...
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10.7 - 1 625 5 2 = x Vertical Motion Formula(you don’t...

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