1 .Rozwiąż równania :
a) |x-1|=2
b) |x-4|=0
c) |x+1|=4
d) |x+2|=3
e) |x-3|=7
f) 1-|x+5|=0
g) 7|x-5|=21
h) 2|x-1|-4=0
i) 5-2|x+3|= -15
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a)
(x-1)=2
x-1=2
x=2+1
x=3
b)
(x-4)=0
x-4=0
x=4
c)
(x+1)=4
x+1=4
x=4-1
x=3
d)
(x+2)=3
x+2=3
x=3-2
x=1
e)
(x-3)=7
x-3=7
x=7+3
x=10
f)
1-(x+5)=21
1-x-5=21
x=21-1+5
x=25
g)
7(x-5)=21
7x-35=21
7x=21=35
7x=56 //:7
x=8
h)
2(x-1)-4=0
2x-2-4=0
2x=4+2
2x=6 //:2
x=3
i)
5-2(x+3)=-15
5-2x-6=-15
-2x=-15-5+6
-2x=-14 //*(-1)
2x=14 //:2
x=7
to jest na 100% dobrze :) licze na NAJJJJ <3
POWODZENIA ;)