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quadratic formula question

Hi all,
I hope this is the right forum to post this on...
I came across this question when revising
Solve the hard quadratic equation 5x(squared) -3x + 5= 0 by using the quadratic formula

(i can't do it because I dont know how you do it because i keep needing to square root -91 which obviously you can't do.

Any help at all would be much appreciated, as my exam is tomorrow :s-smilie:

Thank you

Reply 1

Dualcore

What level are you at, yeah the result will be imaginary.

Reply 2

tennantgirl

Original post by Dualcore

What level are you at, yeah the result will be imaginary.

thats what I thought, but Ive seen this equation come up in my spec for A* and on this website http://www.interactivemaths.co.uk/ma...s/section6.swf (its the 4th point down), and its gcse

:smile:

Reply 3

Vib-Rib

Well unless GCSE has changed drastically I don't think you'll be giving complex roots.