sassy73: what two numbers multiplied equal -40, then with the same two numbers added equal -7
Hi sassy73
Are you trying to find the roots for y= x
2 -7x - 40 ?
If you want the exact roots you will need to use the quadratic formula (or completing the square method)
There are no rational numbers that mult to -40 and add to -7
However, I can give you approximations in 2 different ways using graphs.
Try and make sense of this
140307 approx roots.JPG
+118723 
