Posted by **anonymous** on Monday, September 22, 2008 at 10:40pm.

what is the value of "x" when y=0:

8x^2-x-5=y

eight times x squared minus x minus five equals y

- geometry -
**bobpursley**, Monday, September 22, 2008 at 10:55pm
Use the quadratic equation:

x=(1+-sqrt(1+160))/16

check that, I did it in my head.

- geometry -
**taz manian**, Monday, September 22, 2008 at 11:10pm
do you know the anwser to the question above this one

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