potrzebne na dzisiaj ! dam naj.
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) + 10x( -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 + zx - zy = xy - zy
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) + 10x( -y +1) = -10x + 5xy - 5xy - y - 10xy + 10x = -y - 10xy
a)-6y+9x+6y+4x=5x
b)-4x+20y+6y+3x=-1x+26y
c)2x^2+4y-2x^2-xy=4y-xy
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