Question

Rozwiąż:

-3(x+y)

-5(m-n)

-6(-c-d)

1/2(4x-2)

-2/3(6a-12b)

(c-2d)*0,5

(x^2+3y^2) * (-1,2)

-5(4a-3b)-4(5a-5b)

-3x(2x - 3y)+2x(-3x-5y-1)

-2x(x-5y-3)+3(x+5y+2)

2-x(2y-3)+2(-y+4x)

-2(-3x -y)-3x(1+y)

-(6-3y)-(x-2y)-2(x+y)

Answer 1

-3(x+y) = -3x - 3y

 

-5(m-n) = -5m + 5n

 

-6(-c-d) = 6c + 6d

 

1/2(4x-2) = 2x - 1

 

-2/3(6a-12b) = -4a + 8b

 

(c-2d)*0,5 = (c-2d)*1/2 = 1/2c - d

 

(x²+3y²) * (-1,2) = -1,2x² - 3,6y²

 

-5(4a-3b)-4(5a-5b) = -20a + 15b - 20a + 20b = -40a + 35b

 

-3x(2x - 3y)+2x(-3x-5y-1) = -6x² + 9xy - 6x² - 10xy - 2x

 

-2x(x-5y-3)+3(x+5y+2) = -2x² + 10xy + 6x + 3x + 15y + 6

 

2-x(2y-3)+2(-y+4x) = 2 - 2xy + 3x - 2y + 8x = 2 - 2xy - 2y +11x

 

-2(-3x -y)-3x(1+y) = 6x + 2y - 3x - 3xy

 

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

 

 

Answer 2

-3[x+y]= -3x-3y
-5[m-n]= -5m+5n
-6[-c-d]=6c+6d
1/2[4x-2]=2x-1
-2/3[6a-12b]= -4a+8b
[c-2d]*0,5=0,5c-d
[x^+3y^]*[-1,2]= -1.2x^-3,6y^
-5[4a-3b]-4[5a-5b]= -20a+15b-20a+20b= -40a+35b
-3x[2x-3y]+2x[-3x-5y-1]= -6x^+9xy-6x^-10xy-2x= -xy-2x
-2x[x-5y-3]+3[x+5y+2]= -2x^+10xy+6x+3x+15y+6= -2x^+10xy+9x+15y+6
2-x[2y-3]+2[-y+4x]=2-2xy+3x-2y+8x=2-2xy+11x-2y
-2[-3x-y]-3x[1+y]=6x+2y-3x-3xy=3x+2y-3xy
-[6-3y]-[x-2y]-2[x+y]= -6+3y-x+2y-2x-2y= -6+3y-3x

 

 

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