How do you solve 10x+212=22 and find any extraneous solutions?

1 Answer
Jul 22, 2016

The Soln. is x=0.4685

Explanation:

10x+212=2210x+2=12+22=34

log1010x+2=log1034

(x+2)log1010=1.5315..................[Using LogTable]

(x+2)1=1.5315

x+2=1.5315

x=1.53152

x=0.4685 is the Soln.