SOLUTION: (7b-4)^2= 144 ?? solve each equation by using the square root property. write all radicals in simplest form. thanks so much for your help!!!

Algebra ->  Radicals -> SOLUTION: (7b-4)^2= 144 ?? solve each equation by using the square root property. write all radicals in simplest form. thanks so much for your help!!!      Log On


   

Question 641674: (7b-4)^2= 144 ??
solve each equation by using the square root property. write all radicals in simplest form. thanks so much for your help!!!
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
(7b-4)^2 = 144

7b-4 = sqrt(144) or 7b-4 = -sqrt(144)

7b-4 = 12 or 7b-4 = -12

7b = 12+4 or 7b = -12+4

7b = 16 or 7b = -8

b = 16/7 or b = -8/7

So the solutions are b = 16/7 or b = -8/7