SOLUTION: Solve the Quadratic equation with the quadratic formula and simplify the complex solution {{{ X^2+7=0 }}}and {{{ X^2-3X+3=0 }}}. thank you so very much!!!!!

Algebra ->  Average -> SOLUTION: Solve the Quadratic equation with the quadratic formula and simplify the complex solution {{{ X^2+7=0 }}}and {{{ X^2-3X+3=0 }}}. thank you so very much!!!!!      Log On


   

Question 695693: Solve the Quadratic equation with the quadratic formula and simplify the complex solution +X%5E2%2B7=0+and +X%5E2-3X%2B3=0+. thank you so very much!!!!!
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
a= 1 b= 0 c= 7

b^2-4ac= 0 - 28
b^2-4ac= -28
sqrt%28%09-28%09%29= 2sqrt(7)i
x=%28-b%2B-sqrt%28b%5E2-4ac%29%29%2F%282a%29
x1=%28-b%2Bsqrt%28b%5E2-4ac%29%29%2F%282a%29
x1=( 0 + 2sqrt(7)i )/ 2
x1= sqrt(7)i
x2=( 0 -sqrt(7)i ) / 2
x2= -sqrt(7)i