3)wykonaj dzialania
A) (2x-3)-(x+5)+(x+4)
B) (3a-2)-(a+4)+(a-3)
C) 4(2y-7y)-3(y-3y)
D) -5(2b+3z)+2(2b-4z)
4)zamien sume na iloczyn.
A)3(x-2)+4(x-2)
B)8(x+4)-5(x+4)
C)3(x-7)+8(x-7)
D)7(x-3)-(x-3)
E)4(x+5)+20(x+5)
F)0,2(-10+x)-(-10)
5)wylacz wspolny czynnik przed nawias.
A)-8x+6y_2
B)6a-12b+18c
C)21x+14y-7
D)-1,6a-0,8b-4,8c]
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3. A) (2x-3)-(x+5)+(x+4) = 2x-3-x-5+x+4 = 2x - 4
B) (3a-2)-(a+4)+(a-3) = 3a-2-a-4+a-3 = 3a-10
C) 4(2y-7y)-3(y-3y) = -20y+6y = -14y
D) -5(2b+3z)+2(2b-4z) = -10b-15z+4b-8z = -6b - 23z
4. A)3(x-2)+4(x-2) = (x-2)(3+4)=7(x-2)
B)8(x+4)-5(x+4) = (x+4)(8-5)=3(x+4)
C)3(x-7)+8(x-7) = (x-7)(3+8)=11(x-7)
D)7(x-3)-(x-3) = (x-3)(7-1)=6(x-3)
E)4(x+5)+20(x+5) = (x+5)(4+20)=24(x+5)
F)0,2(-10+x)-(-10) = -2+0,2x+10=8+0,2x=0,2(40+x)
5.A)-8x+6y-2=-2(4x-3y+1)
B)6a-12b+18c=6(a-2b+3c)
C)21x+14y-7=7(3x+2y-1)
D)-1,6a-0,8b-4,8c=-0,8(2a+b+6c)