" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Yang variablenya sama tinggal di operasikan
1. (a+b)(a+b)
= a² + ab + ba + b²
= a² + 1ab + 1ab + b²
= a² + (1+1)ab + b²
= a² + 2ab + b²
2. (a-b)(a-b)
= a² - ab - ba + b²
= a² - 1ab - 1ab + b²
= a² - (1+1)ab + b²
= a² - 2ab + b²
3. (a+b)(a-b)
= a² - ab + ba - b²
= a² - 1ab + 1ab - b²
= a² + (-1+1)ab - b²
= a² + 0ab - b²
= a² - b²
Keterangan :
AB = BA -----> sifat komutatif perkalian
AB = 1AB
( a + b )( a + b )=+ ab + ab +
= + 2 ab +
( a - b )( a - b ) =
=
( a + b )( a -b ) =
=
selesai ^^