What of the following is the complete factorization of the polynomial - x^3+2x^2+x+2 A.(x+2)(x+i)(x-i)
B. (x-2)(x+i)(x-i)
C. (x-2)(x+i)(x+i)
D. (x+2)(x+i)(x+i)

9514 1404 393

  A. (x +2)(x +i)(x -i)

Step-by-step explanation:

The complex factors must be conjugates, eliminating choices C and D.

The product of the complex factors will be (x^2 +1) so the remaining factor must have a constant of +2 in order for the constant in the product to be 2.

  p(x) = (x +2)(x² +1) = (x +2)(x +i)(x -i)

∠acb = 8°

step-by-step explanation:

∠xba lies on the circle and is half the measure of the intercepted arc ax

hence

measure of arc ax = 2 × 42° = 84°

∠acb is outside the circle and is

∠acb = (arcab - arcax ), hence

∠acb = 0.5 (100 - 84) = 0.5 × 16° = 8°

answer: no

step-by-step explanation:

you are only given the cost not the amount of pounds.