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The Quadratic Formula

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The Quadratic Formula

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    1. The Quadratic Formula For equations of the form ax2 + bx + c = 0 x = -b b2 - 4ac 2a

    2. The Quadratic Formula

    3. The Quadratic Formula

    4. So The Solution is::: x2 -3x -18 = 0 x = 6 and -3

    5. The Quadratic Formula

    6. The Quadratic Formula

    7. So The Solution is::: x2 -9x +18 = 0 x = 6 and 3

    8. Now You Try First replace a,b,c in the formula x2 +3x -18 = 0 x = -b b2 - 4ac 2a

    9. Now You Try First replace a,b,c in the formula x2 +3x -18 = 0 x = -3 32 - 4•1•(-18) 2•1

    10. Now solve the formula x = -3 32 - 4•1•(-18) 2•1 x = -3 9 + 72 2

    11. Now solve the formula x = -3 81 2 x = -3 9 2

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