Question

10 Using the quadratic formula to solve x2 = 5 – X, what are the values of x?

Answer 1

x^2 = 5 - x

x^2 + x - 5 = 0

-1 +/-$\frac{ \sqrt{ {1}^{2} - 4(1 \times - 5) } }{2}$

x = (1 + √21) / 2

x = (1 - √21) / 2