NO (according to their specifications)
since LG TV 55UF6450 supports Bluetooth and Wireless Solar Keyboard K750 is an Unifying device
Is it LG TV 55UF6450?
Download the LG TV 55UF6450 and click on Specification on the left panel to see Wireless LAN Bluetooth For UF6900, UF7300 series
http://www.lg.com/us/support-product/lg-55UF6450
Wireless Solar Keyboard K750 = Unifying device
http://support.logitech.com/en_us/article/23116?product=a0qi00000069uiJAAQ
Logitech -K480 = A BLUETOOTH DEVICE might work.
Logitech - K480 Tenkeyless (TKL) Bluetooth Membrane Multidevice Keyboard - Black
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