Question

Ł) -2x(x-8y+7)=.. m) -3xy(4x-5y+6)=... n) 2(3x-4y+5)-3(-6x+5y-7) o) x(3x-4)-9(x² -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+44x)]-6[2x(3x+4y)]=... w) 2m(-5+n)-4[-4m+2(n-3)]-6(m-4n)=... x) 2[2x-3-2(x+1)]+3[x-5-3(x-2)]=... PLIS... NA JUZ MI TO TRZeBA... :) Z GÓRY DZIEKI ! ZAPRASZAM NA SERWER W CONTER-STRIKE 91.204.161.55:27155 (mili admini miła atmosfera...!)

Answer 1

ł) -2x(x-8y+7)=

-2x²+16xy-14x

 

m) -3xy(4x-5y+6)=

-12x²y+15xy²-18xy

n) 2(3x-4y+5)-3(-6x+5y-7)=

6x-8y+10+18x-15y+21=

24x-23y+31

o) x(3x-4)-9(x² -4x)=

3x²-4x-9x²+36x=

-6x²+32x

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)=

8a²-12ab+36ac-48a

t)2x(3a-2b)+3a(-2x+1)+4bx=.

6ax-4ba-6ax+3a+4ba=3a

u) 7[2x-(3y+44x)]-6[2x(3x+4y)]=...

7(-6xy+88x²)-6(6x²+8xy)=

-42xy+616x²-36x²-48xy=

580x²-90xy

w) 2m(-5+n)-4[-4m+2(n-3)]-6(m-4n)=

-10mn-4(-4m+2n-6)-6m+24n=

-10mn+16m-8n+24-6m+24n=

-10mn+10m+16n+24

x) 2[2x-3-2(x+1)]+3[x-5-3(x-2)]=

2(2x-3-2x-2)+3(x-5-3x+6)=

4x-6-4x-4+3x-15-9x-18=

-6x-39