Unit 3. Equations, inequations and systems

1. Equations

   • Linear equations 
   • Second degree equations. 
   • Complete equation: ax²+bx+c=0
   • Incomplete equations 
   ax² + c=0  Steps b=0 
   ax² + bx =0 Steps c=0
   • Discriminant: number of solutions Definition exercises2
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   • Biquadratic equations ax⁴+bx²+c=0 Steps      EjerciciosPDF
   • Factorize equations (...)·(...)·(...)=0 Steps         EjerciciosPDF
   • Rational equations (with x in the denominator) Steps Check solutions
   • Radical equations  T1 T2 Check solutions
   • Exponential equations T1 T2 T3 T4    EjerciciosPDF
   • Logarithmic equations T1 T2              EjerciciosPDF
   • Absolute value equations LiveWS

2. Systems equations

   • Linear equations (REVIEW)
   • Graphic Method
   • Substitution Method  Steps
   • Equating Method       Steps
   • Elimination Method  Steps
   • Non-linear equation systems
   • StepsT1   StepsT2
   • Exponential Steps Exercises
   • Logarithmic StepsT1 StepsT2 Exercises

3. Inequations

   • Solving first degree inequations
   • Solving second degree inequations 
   • Systems of inequations

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