a.) 6a - (2a - 3b ) + ( a - 6b ) =
b.) -(3x - 4y) - (2x - 3y) + ( -y + 4x ) =
c.) -(3x - 4y) - (2x - 3y) - ( -y + 4x ) =
d ) (x+5y) - (4+2x) - (3y-1) =
Wykonaj mnożenie i zredukuj wyrazy podobne
a.) (2-x) (6x + 1) - ( 4x+3) (5-2x) =
b.) ( 2/3 y - 1/2 ) ( 3/5 y - 2/3 ) =
/= kreska ułamkowa daje naj
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a)6a - (2a - 3b ) + ( a - 6b ) =6a - 2a + 3b + a - 6b = 5a-3b
b) -(3x - 4y) - (2x - 3y) + ( -y + 4x ) = -3x +4y - 2x +3y -y + 4x =x+6y
c) -(3x - 4y) - (2x - 3y) - ( -y + 4x ) = 3x + 4y - 2x + 3y +y + 4x =5x+8y
d) (x+5y) - (4+2x) - (3y-1) = x+5y - 4-2x - 3y+1 =-x+2y-3
W tym na dole zapomiałeś o znakach
a.) (2-x)brak (6x + 1) - ( 4x+3) (5-2x) =
b.) ( 2/3 y - 1/2 )brak( 3/5 y - 2/3 ) =
a.) 6a - (2a - 3b ) + ( a - 6b ) = 6a - 2a +3b +a -6b = 5a -3b
b.) -(3x - 4y) - (2x - 3y) + ( -y + 4x ) = -3x +4y -2x +3y - y +4x = -x +6y
c.) -(3x - 4y) - (2x - 3y) - ( -y + 4x ) = -3x +4y -2x +3y +y -4x = -9x + 8y
d ) (x+5y) - (4+2x) - (3y-1) = x +5y - 4 -2x -3y +1 = -x +2y -3
Wykonaj mnożenie i zredukuj wyrazy podobne
a.) (2-x) (6x + 1) - ( 4x+3) (5-2x) = 12x +2 -6x2 - x -(20x -6x2 +15 -6x) =
12x +2 -6x2 - x -20x +6x2 -15 +6x = 18x - 21x -13 = -3x -13
b.) ( 2/3 y - 1/2 ) ( 3/5 y - 2/3 ) = 2/5y2 - 4/9y -3/10y + 1/3 = 2/5y2 - 40/90y -27/90y +1/3 = 2/5y2 -67/90y +1/3
6x2 - 6 x do kwadraty
y2 - y do kwadratu