Posted by anonymous on .
what is the value of "x" when y=0:
8x^2x5=y
eight times x squared minus x minus five equals y

geometry 
bobpursley,
Use the quadratic equation:
x=(1+sqrt(1+160))/16
check that, I did it in my head. 
geometry 
taz manian,
do you know the anwser to the question above this one