Question 971916
15^x^2-x -236=0.

Quadratic equation could work, but I'd look at factors of 236, which are 2 and 118 and 4 and 59

15 *4=60   1*59=1

I want (15x+59) (x-4)=0

x=4, x=-(59/15)


{{{graph (300,300,-10,10,-250,20,15x^2-x-236)}}}, looking for a root at 4 and close to -4