SOLUTION: 3 / [ 2x - 3] = 5x+7 / [x + 1] Solve using quadratic formula The answer should be -1.4 and 1.8?
This is a fraction question. I'm not sure if I used parentheses correct
Algebra.Com
Question 1008692: 3 / [ 2x - 3] = 5x+7 / [x + 1] Solve using quadratic formula The answer should be -1.4 and 1.8?
This is a fraction question. I'm not sure if I used parentheses correct
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
3 / [ 2x - 3] = 5x+7 / [x + 1] Solve using quadratic formula The answer should be -1.4 and 1.8?
----
Cross-multiply to get:
3(x+1) = (2x-3)(5x+7)
----
3x+3 = 10x^2 -x - 21
----
10x^2 - 4x - 24 = 0
----
Simplify::
5x^2 - 2x - 12 = 0
---
Quad Formula::
x = [2 +- sqrt(4-4*5*-12)]/10
------
x = [2 +- sqrt(244)]/10
------
x = [2 +- 2sqrt(61)]/10
----
Answers are not what you posted.
Cheers,
Stan H.
----------
RELATED QUESTIONS
I need to pass the real test. So can someone please tell me if i got these questions... (answered by Alan3354)
Solve this equation by using the quadratic formula. 3/x-7+4/x+2=1 (answered by thesvw)
my question is this
solve the quadratic equation using the formula
1/1+x -1/3-x =... (answered by checkley75)
I need to rewrite the equation so that y is a function of x but I do not know how to do... (answered by Theo)
Help please!
Instructions: Use the quadratic formula to solve the equation
2x^2-x=-7
(answered by ewatrrr)
i need help solving these quadratic equations using the quadratic formula.
2x^2 - 5x = 3
(answered by edjones)
i need help solving these quadratic equations using the quadratic formula.
2x^2 - 5x = 3 (answered by Annabelle1)
Determine whether the following equations have a solution or not and justify your answer.
(answered by checkley71)
Solve 3^2x=7(3^x)-12 and check for extraneous roots.
I know this is a quadratic... (answered by mouk)