Sagot :
a) (x²+1)(x+1)
x³+x²+x+1
b) x=10
(x²+1)(x+1)
(10²+1)(10+1)
(100+1)(10+1)
101x11=(100x11)+(1x11)=1100+11=1111
x³+x²+x+1
b) x=10
(x²+1)(x+1)
(10²+1)(10+1)
(100+1)(10+1)
101x11=(100x11)+(1x11)=1100+11=1111