Question

Solve x2 + 7x = 1

Answer 1

x^2+7x = 1
x^2 + 7x + (7/2)^2 = 1 + (7/2)^2
x^2 + 7x + 49/4 = 1 + 49/4
(x+7/2)^2 = 4/4 + 49/4
(x+7/2)^2 = 53/4
x + 7/2 = sqrt(53/4)
x = sqrt(53/4) - 7/2
x = + or - sqrt(53)/2 - 7/2

Answer 2

Hah, Thanks(:
That was the right one.