SOLUTION: Find 2 consecutive negative numbers that have a product of 90

Question 614922: Find 2 consecutive negative numbers that have a product of 90
Found 2 solutions by Alan3354, solver91311:
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Find 2 consecutive negative numbers that have a product of 90
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sq root of 90 =~ 9.5, the average
--> 9 & 10

Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!

Let be the first number and then is the next consecutive number. Then if their product is 90:

Put the quadratic into standard form, then solve for . Discard the positive root since the problem asks you to find negative integers. Then calculate

John

My calculator said it, I believe it, that settles it

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