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Sagot :

Salut !

f(x) = x² - 3x

donc : f(-1,2) = (-1,2)² - 3(-1,2) = 5,04

          f(-1) = (-1)² - 3(-1) = 4

          f(-0,8) = (-0,8)² - 3(-0,8) = 3,04

          f(-0,6) = (-0,6)² - 3(-0,6) = 2,16

          ......

          f(1,8) = 1,8² - 3(1,8) = -2,16

          f(2) = 2² - 3(2) = -2

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