3x² + 4 = 0

any help would be excellent thanks

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- Dec 18th 2007, 10:04 AMgracey[SOLVED] equation help
3x² + 4 = 0

any help would be excellent thanks - Dec 18th 2007, 10:17 AMbobak
two methods

if you are fimmilar with completing the sqaure

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

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

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. - Dec 18th 2007, 10:21 AMgracey
thanks