SOLUTION: I need to find the numerical value of the division problem of 3x squared + x -4 divided by 2x squared + 3x -4 when the value of x is -3. I got 31 over 34.

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: I need to find the numerical value of the division problem of 3x squared + x -4 divided by 2x squared + 3x -4 when the value of x is -3. I got 31 over 34.      Log On


   

Question 598581: I need to find the numerical value of the division problem of 3x squared + x -4 divided by 2x squared + 3x -4 when the value of x is -3. I got 31 over 34.
Answer by math-vortex(648) About Me  (Show Source):
You can put this solution on YOUR website!
Hi, there--
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You want to evaluate the rational expression for x=-3. Substitute -3 for x and simplify.
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%283x%5E2%2Bx-4%29%2F%282x%5E2%2B3x-4%29
%283%28-3%29%5E2%2B%28-3%29-4%29%2F%282%28-3%29%5E2%2B3%28-3%29-4%29
%283%289%29-3-4%29%2F%282%289%29-9-4%29
%2827-7%29%2F%2818-13%29
20%2F5
4
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When x = -3, the expression evaluates as 4.
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I got a different answer than you did. It's possible that I am using the wrong equation. Check that carefully, before you change your answer. If you still have questions, feel free to email me via gmail.
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Ms.Figgy
math.in.the.vortex@gmail.com