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4 Cards in this Set
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To Solve a quadratic equation |
Step 1: Move all terms to one side of the equation, leaving zero on the other side. Step 2: Factor the expanded equation into binomials. Step 3: Set each expression equal to 0 and solve for the variable. |
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Foil this: (2x + 1)(x - 8) |
2x² - 16x + x - 8 (then combine like terms) 2x^2 - 15x - 8 |
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If x² - 3x + 5 = 3, what is x? |
First set the quadratic equation equal to 0: x² - 3x + 5 = 3 -3 -3 x² - 3x + 2 = 0 Then reverse foil: (x - 2)(x -1) = 0 x = 1, 2 |
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2y(y - 4) = 0 |
2y = 0 y - 4 = 0 y = 0, 4 |
