Question

Stabiliti care dintre urmatoarele ecuatii au solutii intregi si in caz afirmativ rezolvati-le: |x|=3 2|x|-3=5 |2x-1|=17 3|x+1|+5=|x+1|+11 va rog urgent!! =)

Answer 1

|x|=3  => x = +/- 3
 2|x|-3=5  => 2|x| = 2  => |x| = 1  =>  x = +/- 1
 |2x-1|=17  =>   2x - 1 = 17  => 2x = 18  => x = 9
                        2x - 1 = - 17 => 2x = -16  => x = -8
 3|x+1|+5=|x+1|+11  => 2|x + 1| = 6 => x+1 = 3 => x = 2
                                                            x+1 = -3 => x = -4