posted by amy on .
I'm hoping I did thesse right.
Solve each quadratic equation.
(I don't know how to do symbols on here so i'll write it out in word form)
The equation is: x squared + 3x+4=0 I said its not possible because i got x=3 + or - the square root of -7/2 and you cant find a square root of a negative number.
Am I correct?
Have you ever heard of imaginary roots?
i = sqrt (-1)
sqrt(-7) = sqrt(7) i
no. we havent done them. so your saying you can find the square root of a negative number and solve a quadratic equation?