bonsoir
f (x) = x²
f (0) = 0
f ( 2) = 4
g (x ) = 6 x - 9
g (0) = - 9
g ( 1 ) = 6 - 9 = - 3
x² = 6 x - 9
x² - 6 x + 9 = 0
( x - 3 )² = 0
x = 3
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bonsoir
f (x) = x²
f (0) = 0
f ( 2) = 4
g (x ) = 6 x - 9
g (0) = - 9
g ( 1 ) = 6 - 9 = - 3
x² = 6 x - 9
x² - 6 x + 9 = 0
( x - 3 )² = 0
x = 3