oblicz:
(a+b)² - (a-b)² =
(a+b)do potęgi 3 - (a-b) do potęgi 3 =
(a+b) (a² - 2ab + b²) - (a-b) (a² +ab + b²) =
(a+b)² - (a-b)² =a²+2ab +b²- a²-2ab +b²
(a+b)do potęgi 3 - (a-b) do potęgi 3 = (a+b)(a²-ab +b²)-(a-b)(a²+ab +b²)
(a+b) (a² - 2ab + b²) - (a-b) (a² +ab + b²) = (a+b)do potęgi 3 - (a-b) do potęgi 3
(a+b)²-(a-b)²=a²+2ab+b²-(a²-2ab+b²)=a²+2ab+b²-a²+2ab-b²=4ab
(a+b)³-(a-b)³=a³+3a²b+3ab²+b³-(a³-3a²b+3ab²-b³)=6a²b+2b³
(a+b) (a² - 2ab + b²) - (a-b) (a² +ab + b²) = a³+b³-(a³-b³)=2b³
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
(a+b)² - (a-b)² =a²+2ab +b²- a²-2ab +b²
(a+b)do potęgi 3 - (a-b) do potęgi 3 = (a+b)(a²-ab +b²)-(a-b)(a²+ab +b²)
(a+b) (a² - 2ab + b²) - (a-b) (a² +ab + b²) = (a+b)do potęgi 3 - (a-b) do potęgi 3
(a+b)²-(a-b)²=a²+2ab+b²-(a²-2ab+b²)=a²+2ab+b²-a²+2ab-b²=4ab
(a+b)³-(a-b)³=a³+3a²b+3ab²+b³-(a³-3a²b+3ab²-b³)=6a²b+2b³
(a+b) (a² - 2ab + b²) - (a-b) (a² +ab + b²) = a³+b³-(a³-b³)=2b³