Use the quadratic formula to find the values of x for the equation: x to the power of 2 - 4x - 10 = 0

Answer 1

x^2 - 4x - 10 = 0

A=1 B=-4 C = -10

x = [ 4 +or- sqrt( 16 - 4* - 10)]/ 2

= [ 4 +or- sqrt( 16 + 40)]/2

= [ 4 +or- sqrt(56)]/2

= 4 +or- 2 * sqrt(14)]/2

= 2 +or- sqrt(14)