Question

1.Rezolvati in Z ecuatia:
a)|x|=5
b)|x-5|=0
c)|x+4|=2
d)|x|=0
e)|x+6|=2
f)|x-2|=-1
g)|3x+1|=10
h) |3x+4|=19
i)|4x+10|=-3
2.Determinati A∪B stiind ca A={x∈Z/4x-3>5} si B={x∈Z/|x|≤6}
va rog,dau coroana

Answer 1

1. a) |x|=5,-5
b)|x-5|=0
x=5
5-5=0