How many values of -LSB- math -RSB- x -LSB- / math -RSB- -LRB- -LSB- math -RSB- x \ in \ mathbb -LCB- Z -RCB- -LSB- / math -RSB- -RRB- are there such that -LSB- math -RSB- -LRB- x ^ 2 - x - 1 -RRB- ^ -LCB- x + 2 -RCB- = 1 -LSB- / math -RSB- ?
What is -LRB- X ^ -LRB- 2 -RRB- -RRB- * -LRB- X ^ -LRB- 1/2 -RRB- -RRB- ?