Question 887885
x^2 - 14x + 42 = 0
use quadratic equation, x = (-b + or - square root(b^2 - 4*a*c))/ 2a
x = (14 + square root( (-14)^2 -4*1*42)) / 2*1 = 9.645751311
x = (14 - square root( (-14)^2 -4*1*42)) / 2*1 = 4.354248689
x has two solutions  9.645751311, 4.354248689