Zapisz w jak najprostrzej postaci:
(proszę krok po kroku)
1. (4a+2)^2 -(a-1)^2
2. (x-2)^2+3(x+1)
3. 2(a+1)^2- 3(a-2)^2
4. (3-ab)^2-4(a+2)^2-(a-1)
5. (3a-2b)^2-(a+2b)^2-(a+b) - (a+b)
6. (a-3b)^2-(a^2+b^2)
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
1.
( 4a + 2 )² - ( a - 1 )² =
4a² + 4 - ( a² - 1 ) =
4a² + 4 - a² + 1 =
3a² + 5
2.
( x - 2 )² + 3( x + 1 ) =
x² - 4 + 3x + 3 =
x² - 1 + 3x
3.
2( a + 1 )² - 3( a - 2 )² =
2( a² + 1 ) - 3( a² - 4 ) =
3a² + 2 - 3a² + 12 =
14
4.
( 3 - ab )² - 4( a + 2 )² - ( a - 1 ) =
9 - a²b² - 4( a² + 4 ) - a + 1 =
9 - a²b² - 4a² - 16 - a +1 =
-6 - a²b² - 5a
5.
( 3a - 2b )² - ( a + 2b )² - ( a+ b ) - ( a + b ) =
9a² - 4b² - ( a² + 4b² ) - ( a + b ) - ( a + b ) =
9a² - 4b² - a² - 4b² - a - b - a - b =
8a² - 8b² - 2a - 2b
6.
( a - 3b )² - ( a² + b² ) =
a² - 9b² - a² - b² =
-10b²