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Published byFrançoise Dufour Modified over 6 years ago
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x y -1 0 1 2 3 4 1.5 y = x2 - 3x 4 -2 -2 4 -2.25 Solutions of
1.5 y = x2 - 3x 4 -2 -2 4 -2.25 y x 1 2 3 4 –1 5 –2 –3 6 y = x2-3x Solutions of x2 - 3x = 0 x = 0, x = 3 Solutions of x2 - 3x = 3 x = -0.8, x = 3.8 Minimum (1.5,-2.25)
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x y y = 5 + 2x - 4x2 -37 -15 -1 5 3 -7 -25 x y 1 2 3 –1 –2 –3 -15 -10 -5 5 -20 -25 -30 -35 -40 Maximum (0.25, 5.25) Solutions of 5 + 2x - 4x2 = 0 x = -0.9, x = 1.4 Solutions of 25 + 2x - 4x2 = 0 y = 5 + 2x - 4x2 5 + 2x - 4x2 = -20 x = -2.3, x = 2.8
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