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2009-10-29T17:34:14+01:00
2[4x-(4y+3x)]-4[3x-(2x-3y)] = 2(4x-4y-3x)-4(3x-2x+3y)=
=2x-8y-4x-12y=-2x-20y
2009-10-29T17:35:54+01:00
2[4x-(4y+3x)]-4[3x-(2x-3y)] = 2(4x-4y-3x)-4(3x-2x+3y)=
=8x-8y-6x-12x+8x-12y= -2x-20y
2009-10-29T17:36:00+01:00
2(4x-4y-3x)-4(3x-2x+3y)=8x-8y-6x-12x+8x-12y= -2x-20y