Which statement explains why the polynomial cannot be factored using the binomial theorem? 125x3 + 900x2 – 2,160x + 1,728

The signs do not follow the right pattern.
The first and last terms are not perfect cubes.
The exponents on each term do not follow the pattern for a binomial expansion.
The middle terms do not take into account the coefficients from Pascal’s triangle.

Afactory makes propeller drive shafts for ships. a quality assurance engineer at the factory needs to estimate the true mean length of the shafts. she randomly selects four drive shafts made at the factory, measures their lengths, and finds their sample mean to be 1000 mm. the lengths are known to follow a normal distribution whose standard deviation is 2 mm. calculate a 95% confidence interval for the true mean length of the shafts. input your answers for the margin of error, lower bound, and upper bound.