SOLUTION: I need help with factoring quadratic equations. Here is one. 10d^2+17d-20

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Question 1035679: I need help with factoring quadratic equations. Here is one. 10d^2+17d-20
Found 3 solutions by Alan3354, josgarithmetic, MathTherapy:
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
That's not an equation.
I can tell, there's no equal sign.

Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Try every possible combination you can find. Either one of them will work or none of them will work. Factors of 10 are 1 & 10, and 2 & 5. Factors of 20 are 1 & 20, 2 & 10, 4 & 5. 
(x  1)(10x  20)

(x  20)(10x  1)

(x  2)(10x  10)

(x 10)(10x 2)

and several more different combinations to check...


You might get tired doing that way but you will find what you need.

ax%5E2%2Bbx%2Bc
Discriminant, b%5E2-4ac
Yours is 17%5E2-4%2A10%2A%28-20%29
17%5E2%2B1600
289%2B1600
1889--------not a perfect square

Your quadratic expression is not factorable into integer coefficients. Not rational coefficients either.
...

Answer by MathTherapy(10552) About Me  (Show Source):
You can put this solution on YOUR website!

I need help with factoring quadratic equations. Here is one. 10d^2+17d-20
FYI: This is a TRINOMIAL, and will be an equation only when there's an EQUALS sign
Factored form: highlight_green%28%285d+-+4%29%282d+%2B+5%29%29