Question

Выполните действие : a) (8a-4ab)-(6a+abб) 7(x-4y)в) 9k^5(1-k^2)

Answer 1

1) 8*а-4а*б-6*а-а*б=2*а-5а*б
2) 7*х-28*у
3) 9к^5-9к^7

Answer 2

a) (8a-4ab)-(6a+ab)+7(x-4y) First, we distribute the negative sign in the second parenthesis: 8a - 4ab - 6a - ab + 7x - 28y Now, we combine like terms: (8a - 6a) - 4ab - ab + 7x - 28y 2a - 5ab + 7x - 28y

b) 9k^5(1-k^2) We can use the distributive property to simplify: 9k^5 - 9k^7