Solve Simultaneous Equations y=2x²+3x-31 & y=21-2x

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    Simultaneous equations
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Discussion Overview

The discussion revolves around solving the simultaneous equations y=2x²+3x-31 and y=21-2x. Participants are seeking assistance with the calculations involved in finding the values of x and y.

Discussion Character

  • Homework-related

Main Points Raised

  • One participant suggests equating the right-hand sides of the equations as a method to solve for x and y.
  • Another participant expresses a need for more detailed calculations to understand the solution process better.
  • A third participant emphasizes the importance of attempting the problem independently for better learning, while acknowledging the suggestion made by another participant.

Areas of Agreement / Disagreement

Participants generally agree on the approach of equating the equations, but there is no consensus on the level of assistance needed or the best method to proceed with solving the equations.

Contextual Notes

Some participants express uncertainty about the calculations and the process involved in solving the equations, indicating a need for clarification on specific steps.

Who May Find This Useful

Students or individuals seeking help with solving simultaneous equations in algebra, particularly those looking for step-by-step guidance.

ladybutterz
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y=2x²+3x-31
y=21-2x
solve for x and y
 
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Equate the right-hand sides.
 
Evgeny.Makarov said:
Equate the right-hand sides.
yea but i really need help don't really understand need to see the calculation to understand it properly
 
ladybutterz said:
y=2x²+3x-31
y=21-2x
solve for x and y

I have moved this topic as it is a better fit here in the Pre-Algebra and Algebra sub-forum.

The suggestion given by Evgeny.Makarov is an excellent one, and you should be able to make at least some progress with it. If he does it for you, you will learn less than if you attempt it yourself. :D
 

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