Question

Wykonaj działania:
a) 6(x - 4)- 2=
b) 2(x + 1)- 3(x - 1)=
c)-3(y - 2) + 4(y +2)=
d) 5(x - y - 1)- 4(x + 2)=
e) 2(3a + b) - 2(a - b)=
f) ½(4x - 4) - 2x=
g) x(x - 1) - 3(x² - x)=
h)5a(a - 3)- 3a(a - 5)=
i) 3x(x +⅓y) -2y (½x -½)=`

Answer 1

A) 6(x - 4)- 2=6x-24-2=6x-26
b) 2(x + 1)- 3(x - 1)=2x+2-3x+3=-x+5
c)-3(y - 2) + 4(y +2)=-3y+6+4y+8=y+14
d) 5(x - y - 1)- 4(x + 2)=5x-5y-5-4x-8=x-5y-13
e) 2(3a + b) - 2(a - b)=6a+2b-2a+2b=4a+4b
f) ½(4x - 4) - 2x=2x-2-2x=-2
g) x(x - 1) - 3(x² - x)=x²-x-3x²+3x=-2x²+2x
h)5a(a - 3)- 3a(a - 5)=5a²-15a-3a²+15a=2a²
i) 3x(x +⅓y) -2y (½x -½)=` 3x²+xy-xy+y=3x²+y