Answer pls

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 statement is true? 2x^2-9x+2=-1

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?