exam Maths Puzzle Numerical Ability

I cant figure out how to solve the problem X2 + 9x + 3 = 0.
I was told i need to use the quadratic formula though. Any help would be greatly appreciated.

Read Solution (Total 0)

exam Other Question

Could someone PLEASE graph these equations for me? Thank you!!
(a) 2
(b) 1/2
(c) -2
(d) -1/2 Yellow paint and blue paint must be mixed in the ratio 2:3 to produce the desired shade of green paint. How much of each color should be used to produce 4 L of green paint?