Answer:
hello : (x+3)² -2 = 0
Step-by-step explanation:
x²+12x+7=0
(x² +12x +9) -2 =0
(x+3)² -2 = 0....an equation equivalent
303.6 I think... You have to find 12% of 345 and then minus that away from 345. First you can find 2% and multiply it by 6 and then minus that away from 345. Just double check first though. :)