What is the sum of all values of x for which √(x+3)2=7
Equation: sqrt( (x + 3)2 ) = 7
square both sides: (x + 3)2 = 49
find the square root of both sides: either x + 3 = 7 or x + 3 = -7
solve: x = 4 x = -4
You can finish ...
