Which expression represents x2−8x+16 in factored form? (x+4)2 (x−4)2 (x+4)(x−4) (x−2)(x−8)

Suppose a man is heterozygous for heterochromia, an autosomal dominant disorder which causes two different‑colored eyes in an individual, produced 25‑offspring with his normal‑eyed wife. of their children, 15 were heterochromatic and 10 were‑normal. calculate the chi‑square value for this observation.

What is the square root of 45? (step by step working plz)

This is different from the first one can someone me