Write two numbers that multiply to the value on top and add to the value on bottom

Answer:
9 and -1
Step-by-step explanation:
9 × -1 = -9
And 9 + -1 = 8
A good strategy is to think of the pairs of numbers that mutiply to 9: 1and9, 3and3...then you can apply a negative number as needed to get the proper sum.