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)1/2(4x-4)-2x g)x(x-1)-3(xdo potegi drugiej-x) h)5a(a-3)-3a(a-5) i)3x(x+1/3y)-2y(1/2x-1/2)

Answer 1

a)6(x-4)-2=6x-24-2=6x-26

b)2(x+1)-3(x-1)=2x+2+3x+3=5x=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)1/2(4x-4)-2x =2x-2-2x=-2

g)x(x-1)-3(xdo potegi drugiej-x)

x(x-1)-3(x ²-x)=x ²-x-3x²+3x=-2x²-2x

h)5a(a-3)-3a(a-5)=5a²-15a-3a²+15a=2a²

i)3x(x+1/3y)-2y(1/2x-1/2)=9x²+xy-xy+y=9x²+y