UNIT 7

 UNIT 7 2nd DEGREE EQUATIONS AND SYSTEMS OF EQUATIONS

Objectives 

1. To recognise and solve quadratic or 2nd.degree equations. 

2. To represent points using coordinates in the plane

3. To represent linear equation with two variables in the plane

4. To solve systems of linear equations using graphic method, substitution or elimination method

5. To determine the number of solutions of a 2nd. Degree Equation or a system of linear equations.

Contents 

Using factorisation, or the Cardano formula to solve 2nd degree equations,

Using differents methos of solving system of equations

SOLVING PROBLEMS WITH THE HELP OF EQUATIONS 

• Use of equations as a tool to solve problems. 

– Assigning the unknown. 

– Codification of the elements of the problem depending on the unknown chosen. 

– Construction of the equation. 

– Resolution. Interpretation and explanation of the solution. 

RESOURCES:

• And now in this sections illustrates the process of solving equations of various forms
  http://www.sosmath.com/algebra/solve/solve0/solve0.html
  
  
  • Enjoy with this game Algebra Four                                                        
  http://www.shodor.org/interactivate/activities/AlgebraFour/
  
  • Have a look at this page and  solve quadratic equations
    http://www.enchantedlearning.com/math/algebra/quadratic/
    
    
    AND VIDEOS!
    
    
  • https://youtu.be/ZbnmZy7TjWg
      
  • EXAMPLE OF AN EXAM