April 20, 2014

Homework Help: college math

Posted by amy on Monday, November 6, 2006 at 3:37pm.

I'm hoping I did thesse right.
Solve each quadratic equation.
(I dont 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?

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