1. ## [SOLVED] equation help

3x² + 4 = 0
any help would be excellent thanks

2. two methods

if you are fimmilar with completing the sqaure

$x^2-5x = (x- \frac{5}{2})^2 - ( \frac{5}{2})^2$

it should be obvious that you will get a minimum when $x- \frac{5}{2} = 0$

can you finish it form there ?

for the second part, if your draw a reasonable sketch of the of the graph it should be obvious.

3. thanks