Doprowadź wyrażenie do najprostszej postaci.
a) -3(2y- 3x) + 2 (3y+ 2x)
b) - 4 (x - 5y) - 3 (-2y - x)
c) 2x(x+2y) - x (2x +y)
d) - x (z-y) - z(-x +y)
e) 4 ( x +y) - 2 (x-y) - 3x (1+y)
f) -5x (2- y) - y (5x +1) + 10 x (-y +1)
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a) -3(2y- 3x) + 2 (3y+ 2x) = -6y+9x+6y+4x= 13x
b) - 4 (x - 5y) - 3 (-2y - x) = -4x+20y+6y+3x= -x+26y
c) 2x(x+2y) - x (2x +y) = 2x²+4xy - 2x²-xy= 3xy
d) - x (z-y) - z(-x +y) = -xz+xy+xz-yz= xy-yz
e) 4 ( x +y) - 2 (x-y) - 3x (1+y)= 4x+4y-2x+2y-3x-3xy= -x+6y-3xy
f) -5x (2- y) - y (5x +1) + 10 x (-y +1)= -10x+5xy-5xy-y-10xy+10= -10x-y-10xy+10
a) -6y + 9x + 6y + 4x =13x
b) -4x + 20y + 6y+ 3x = 26y - x
c) 2x² + 4xy - 2x² - xy = 3xy
d) -xz + xy +xz - yz = xy - yz
e) 4x + 4y - 2x + 2y - 3x - 3xy = - x + 6y - 3xy
f) -10x + 5xy - 5xy - y - 10xy + 10x = - y - 10xy