1. solve x5 - 8x4 + 22x3 - 26x2 + 21x - 18 = 0.
o
a x=2, x = £i, x= -3 with multiplicity 2
b x= £i, x= 3 with multiplicity 3
o
c
x=2, x = ti, x= 3 with multiplicity 2
d x=3 with multiplicity 2, x = ti, x=-3

Afactory buys 10% of its components from suppliers b and the rest from supplier c. it is known that 6% of the components it buys are faulty. of the components brought from suppliers a,9% are faulty and of the components bought from suppliers b, 3% are faulty. find the percentage of components bought from supplier c that are faulty.