Gl (n, r), the set of invertible nxn matrices with real entries, is a group under matrix multiplication. determine if the nxn matrices with determinant -1 or 1 is a subgroup. if not, which property does not hold?

correct answer:

i^31 = -i

c

step-by-step explanation: easy math

if i'm not wrong, i would say that the third angle has (72) because the three sides of all triangles have 180 degrees and if we subtract 180 - 62 - 40 = (72) / but i'm not sure about 40 yd.

that would be a prism, if not right, feel free to correct me