bonsoir
h (x) = 2 x² + 5 x - 3
h (0) = - 3
h ( - 10 ) = 2 ( - 10 )² + 5 * ( -10 ) - 3 = 200 - 50 - 3 = 147
h (x) = ( 2 x - 1 ) ( x + 3 )
= 0 pour x = 1/2 et x = - 3
k (x) = 5 /x
ensemble de def = R \ 0
k ( - 2 ) = - 5/2
k ( 10/3 ) = 5 : 10/3 = 5 * 3/10 = 15/10 = 3/2
5 /x = 1/4
x = 20
