Rozwiąż równania:
a) | x | = 5
b) | x +3 | = 7
c) | x-2 | -4 = 12
d) 15 - |x - 1 | = 8
v - lub (taki znak matematyczny gdybyś nie wiedziała)
a)
|x| = 5
x = 5 v x = -5
b)
|x + 3| = 7
x + 3 = 7 v x + 3 = -7
x = 4 v x = -10
c)
|x - 2| - 4 = 12
|x - 2| = 16
x - 2 = 16 v x - 2 = -16
x = 18 v x = -14
d)
15 - |x - 1| = 8
-|x - 1| = -7
|x - 1| = 7
x - 1 = 7 v x - 1 = -7
x = 8 v x = -6
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v - lub (taki znak matematyczny gdybyś nie wiedziała)
a)
|x| = 5
x = 5 v x = -5
b)
|x + 3| = 7
x + 3 = 7 v x + 3 = -7
x = 4 v x = -10
c)
|x - 2| - 4 = 12
|x - 2| = 16
x - 2 = 16 v x - 2 = -16
x = 18 v x = -14
d)
15 - |x - 1| = 8
-|x - 1| = -7
|x - 1| = 7
x - 1 = 7 v x - 1 = -7
x = 8 v x = -6