Répondre :
On considère le polynôme p(x) = 2x³-5x²-x+6
p ( - 1) = 2 ( - 1 ) ³ - 5 ( - 1 )² - ( - 1 ) + 6
= 2 * ( - 1 ) + 5 + 1 + 6
= - 2 + 12 = 10
On considère le polynôme p(x) = 2x³-5x²-x+6
p ( - 1) = 2 ( - 1 ) ³ - 5 ( - 1 )² - ( - 1 ) + 6
= 2 * ( - 1 ) + 5 + 1 + 6
= - 2 + 12 = 10
