Question

Solve the equation by completing the square. Round to the nearest hundreth if necessary. x^2-x-7=0

Answer 1

X^2 - x  = 7
(x - 0.5)^2 - 0.25 = 7
(x - 0.5)^2 = 7.25
(x - 0.5)  = +/- sqrt 7.25
x  =  0.5 +/- sqrt7.25 

solution set is {-2.19, 3.19,}