诺两个多项式5x+3与-x+17的值互为相反数,则x=
问题描述:
诺两个多项式5x+3与-x+17的值互为相反数,则x=
答
x=-5 {5x+3=-(-x+17) 5x+3=x-17 4x=-20 x=-5}
诺两个多项式5x+3与-x+17的值互为相反数,则x=
x=-5 {5x+3=-(-x+17) 5x+3=x-17 4x=-20 x=-5}