Question 13303
Since Y is 10 more than x we have y=10+x.
Subbing this into the equation yields:
x(10+x)=356
or 10x+x^2=356.
Rearranging, we have
x^2+10x-356=0
Now, we solve this using the quadratic formula
{{{x=(-10+-sqrt(10^2-4*1*(-356)))/(2*1)}}}
This yields x=14.5192213 or x=-24.5192213.