SOLUTION: I have this math problem 5x^2 -7x-3=0. I am thinking there is no solution to this problem but i may be incorrect. The reason I feel this way because I can not find an equation th

Question 474144: I have this math problem 5x^2 -7x-3=0. I am thinking there is no solution to this problem but i may be incorrect. The reason I feel this way because I can not find an equation that will equal 7 and come out three. I am really lost.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
I have this math problem 5x^2 -7x-3=0. I am thinking there is no solution to this problem but i may be incorrect. The reason I feel this way because I can not find an equation that will equal 7 and come out three. I am really lost.
---
A = 5
B = -7
C = -3
---
The AC-Method requires that you find
2 numbers whose product is AC = -15
and whose sum or difference = -7
----------------------------
But the only products are 1;15 and 3;5
No sum or difference equals -7.
---
So you'll have to use the Quadratic formula:
x = [7 +- sqrt(49-4*5*-3)]/10
---
x = [7 +- sqrt(109)]/10
----
Cheers,
Stan H.
RELATED QUESTIONS
I am trying to find out why the 3 changes into a 2 in this problem. Here is the work down (answered by Nada)

Hello, my name is Rebecca Ghisoiu. I attend Western Govorners University, an online... (answered by Theo)

i have no clue how to work out this math problem . -3(5x+5)-x=38 May You help me... (answered by jim_thompson5910)

Solve using the elimination method. Show your work. If the system has no solution or an... (answered by Edwin McCravy)

The following logarithm problem is a catastrophe. I did it three times and was hoping for (answered by josgarithmetic,MathTherapy)

I know that this problem may be an easy one, but I am not sure if I am correct.... (answered by ptaylor)

i have been trying to solve this problem and i am running into problems i keep saying it... (answered by scott8148)

I sent this problem earlier but after receiving a response quickly realized I entered the (answered by jim_thompson5910,solver91311)

I have a question I am having problem with. This should be very simple I know. I am... (answered by Fombitz)