Question

Find the real or imaginary solutions to the given equation by using the quadratic formula

Answer 1

Subtract 8x from both sides to get
`x^(2) -8x+20=0`
Then using the quadratic formula:
`x= \frac{-b+/- \sqrt{ b^(2)-4ac } }{2a}`
Substitute a = 1, b = -8, and c = 20

`x= (8+/- √(64-4(1)(20)) )/(2(1))` -(-8) = 8 and (-8)^2 = 64

`x=4+/-2i`