usuń nawiasy i zredukuj wyrazy podobne (mnożenie) : j)2y+4(1-3y) k)(-4x+5y-6z-8)(-2x) l)3a(1-2a+3b) ł)-2x(x-8y+7) m)-3xy(4x-5y+6) n)2(3x-4y+5)-3(-6x+5y-7) o)x(3x-4)-9(x(do potęgi 2)-4x) p)3(a+b)-4(a-b)-5(2a-4b) r)2(17a-16b+5)-3(a-19b-11) s)4a(2a-3b+9c-12) t)2x(3a-2b)+3a(-2x+1)+4bx u)7[2x-(3y+4x)]-6[2x-(3x+4y)] w)2m(-5+n)-4[-4m+2(n-3)]-6(m-4n) y)1/2[3x-1-2(2x-1)]-1/3[2x-1-3(3x+1)] z)2[4-x+1/2(3x+1)]-3[x+6-1/3(2x-1)]

j)2y+4(1-3y)=2y+4-12y= -12y+4 k)(-4x+5y-6z-8)(-2x)=8x^-10xy+12xz+16x ( ^---->oznacza do kwadratu) l)3a(1-2a+3b)=3a-6a^+9ab ł)-2x(x-8y+7)=-2x^+16xy-14x m)-3xy(4x-5y+6)= -12x^y+15xy^-18xy n)2(3x-4y+5)-3(-6x+5y-7)=6x-8y+10+18x-15y+21=24x-23y +31 o)x(3x-4)-9(x(do potęgi 2)-4x)=3x^-4x-9x^+36x= -6x^+32x

j) 2y+4-12y 4-10y k)8x^2-10xy+12xz+18x l)3a-6a^2+9ab ł)-2x^2+16xy-14x m)-12x^2y+15xy^2-18xy n)6x-4xy+10+18x-15y+21 24x-4xy+31-15y o)3x^2-4x-9x^2+36x 12x^2+32x znaczek ^ oznacza potęgę

p)3(a+b)-4(a-b)-5(2a-4b)=3a+3b-4a+4b-10a+20b= -11a+27b r)2(17a-16b+5)-3(a-19b-11)=34a-32b+10-3a+57b+33= 31a +25b+43 s)4a(2a-3b+9c-12)=8a^-12ab+36ac-48a t)2x(3a-2b)+3a(-2x+1)+4bx=6ax-4bx-6ax+3a+4bx= 3a u) 7[2x-(3y+4x)]-6[2x-(3x+4y)]= 7(2x-3y-4x)-6(2x-3x-4y)= 14x-21y-28x-12x+18x+24y= -8x+3y w) 2m(-5+n)-4[-4m+2(n-3)]-6(m-4n)= -10m+2mn-4(-4m+2n-6)-6m+24n= -10m+2mn+16m-8n+24-6m+24n= 16n+2mn+24 y) 1/2[3x-1-2(2x-1)]-1/3[2x-1-3(3x+1)]= 1/2(3x-1-4x+2)-1/3(2x-1-9x-3)= 1,5x-1/2-2x+1-2/3x+1+9x+1= 10 1/2x- 2 2/3x +2,5= 10 3/6x -2 4/6x+2,5= 9 9/6x-2 4/5x+2,5= 7 5/6x+2,5 z) 2[4-x+1/2(3x+1)]-3[x+6-1/3(2x-1)] = 2(4-x+3/2x+1/2) - 3(x+6 -2/3x+1/3)= 8-2x+3x+1-3x-18+2x-1= 26