Question

помогите с алгеброй 8 класс​

Answer 1

Решение:

98х^5-18х^3/7х-3 * 5/(7х+3) = 2х^3*(49x^2-9)/7x-3 * 5/7x+3 = 2x^3*(7x-3)×(7x+3)/7x-3 * 5/7x+3 = 2x^3*5 = 10x^3

При x=2

10x^3 = 10 * 2^3 = 10 * 8 = 80

Ответ: 80

Answer 2

(98•2\5-18•2\3) 5
————————— • —————- =
7•2-3. 7•2+3


6272-144. 5. 6128 5
= ————— • ——- = ——— • ——- =
11 17. 11. 17



= 30640
—————. = 163, 85
187