CalculatorUser

Dang thats a lot of work! But a good problem solved.

You can also do some modulus, but Im too lazy for dat

Yes thank you CPhill I set it up incorrectly

Yes I learned something! I always thought of that the sum of the digits IS nine, now, from I learned from this problem.

Substitute and simplify

2x² + (k+1)x + 2

There is exactly one solution when the discriminate is equal to 0.

That is my hint and I will let you solve.

The rule for divisibility for 9 is that all the digits add up to 9 or a multiply of 9, like 18.

So we can make an equation 

3 + 2a + 1 = 9

4 + 2a = 9

Notice how a will NOT be an integer, so we try 18.

3 + 2a + 1 = 18

4 + 2a = 18

14 = 2a

a = 7

So A must be 7

Yeah that was correct

Oops! Didn't realize it was inccorect!

XD my answer was luck!!

its freezing cold up here in Illinois!

Dang I came back from a race in Cross Country.

The two mile race was fine, except for the freezing weather and that it rained last night so we were swimming in mud instead of running