Question

Find two consecutive negative integers whose product is 90.

Answer 1

try 9 and 10

Answer 2

Do you have an equation for that?

Answer 3

no. they are consecutive and their product is 90
you could try \[x(x+1)=90\] and solve for x if you like

Answer 4

you get
\[x^2+x-90=0\]
and now to factor you are trying to find two numbers whose produce is -90 and whose sum is one, which is basically what the question asked to begin with