How can I calculate the value of -LSB- math -RSB- \ displaystyle \ lim _ -LCB- x \ to ∞ -RCB- \ frac -LCB- 5 ^ -LCB- x +1 -RCB- +7 ^ -LCB- x +1 -RCB- -RCB- -LCB- 5 ^ x-7 ^ x -RCB- -LSB- / math -RSB- ?
How do you calculated value of an object ?