Question

Using the quadratic formula to solve x2 + 20 = 2x, what are the values of x? 1 plus-or-minus StartRoot 21 EndRoot i Negative 1 plus-or-minus StartRoot 19 EndRoot i 1 plus-or-minus 2 StartRoot 19 EndRoot i 1 plus-or-minus StartRoot 19 EndRoot i

Answer 1

-1±√19=x

Explanation:

For cuadratic formula we can use the following equation

x+(b/2)±√(b²/4-c)=0

The equation to solve x²-2x+20=0

Where a=1

b=-2

c=20

(2/2)±√2²/4-20=-x

-1±√19=x