bonjour
f (x) = 2 x ³ + 3 x² + 2 x - 1
f (-4 )= 2 ( - 4 ) ³ + 3 ( - 4 )² + 2 ( -4 ) - 1
f ( -4 ) = - 128 + 48 - 8 - 1 = - 89
