Foster is centering a photo that is 7 1 2 inches wide on a scrapbook page that is 16 inches wide. How far from each side of the page should he put the picture?

-10i^2-4i

step-by-step explanation:

evaluate for p=2,q=5i

(2−4)(2+5i)i

(2−4)(2+5i)i

=−10i2−4i

765238725478629038640962136509762139056074

step-by-step explanation:

64087235609746097215074621039754021037

there is only one way to arrange all the eight relative to each other because they are not distinct. we have

now there are nine places to place an (and not more than one in one place).   because we have four symbols, we need to choose four of these nine places to insert an . order does not matter because the are not distinct.

thus there are 1 · c(9,4) ways, or, if we calculate it,

thus there are 126 ways to form such "words."