Question

if (x+9=0), then find the remainder of (x+x^2+x^3+3x+4x^3-5x+2x^2)​

Answer 1

If x+9=0

x=0-9

∴x=-9

=-9+-9²+-9³+3*-9+4*-9³-5*-9+2*-9²

=-9+81-729-27-46656-45+324

=-47061