Question

For the equation y=x^2+8x+15,what is the value of the largest zero?

Answer 1

-3.

Explanation:

5 times 3 equals 15. 5 plus 3 equals 8. So it factors to (x+3)(x+5). To get a 0, x has to equal either -3 or -5, with -3 being the bigger of the two.