Exercise 16.3 (a Add the following algebraic expressions, Bat 4b+ 7c and 5a + 60 + 9c. 5x2 + 7xy + 8y2 and 9x2 + 8xy + 1172 (C) - 7m2 – 11mn + 13n2 and m2 + 5mn - 15n2 7a2 + 60 - 8 and --5a2 + 9a + 15. 4xy + 3yz – 5zx and 3xy - 9yz + 3zx . (d) e) ubtract. Q2 + 2ab +62 322+ 7rt 8 3a² + 7ab + 9b2 from from 5x2 - 3x + 12.

c is the correct answer

step-by-step explanation:

ιт ιѕ 6 6/23

step-by-step explanation:

нσρє ι ¢συℓ∂ нєℓρ уσυ συт

step-by-step explanation:

reee

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."