Section 5 - Algebraic Equations & Inequalities

Solve multi-step linear equations, quadratics, simultaneous systems, and inequalities across GCSE contexts.

Chapters16

Equations, quadratics, inequalities, iteration, graphical methods.

Time invested12 hrs

Approximate guided learning.

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Chapter 5.1

Linear equations (complex multi-step)

Solve equations requiring multiple inverse operations and nested brackets.

40 minStart
Chapter 5.2

Equations with fractions

Clear denominators efficiently and solve fraction-based equations.

40 minStart
Chapter 5.3

Equations with brackets & fractions

Combine expansion and fraction clearing to solve demanding equations.

45 minStart
Chapter 5.4

Simultaneous equations (elimination – advanced)

Use elimination for larger coefficients and contextual problems.

45 minStart
Chapter 5.5

Simultaneous equations (substitution – advanced)

Solve systems requiring substitution into non-linear expressions.

45 minStart
Chapter 5.6

Simultaneous equations (one linear, one quadratic)

Find intersections analytically and interpret results graphically.

50 minStart
Chapter 5.7

Quadratic equations – factorising

Solve quadratics using factorisation and check solutions.

40 minStart
Chapter 5.8

Quadratic equations – formula

Use the quadratic formula, discriminant, and surd solutions.

45 minStart
Chapter 5.9

Completing the square

Rewrite quadratics in vertex form for solving and graphing.

45 minStart
Chapter 5.10

Solving equations by iteration

Use iterative processes and convergence ideas for non-linear equations.

45 minStart
Chapter 5.11

Linear inequalities (complex)

Solve inequalities with fractions, negative multipliers, and double bounds.

40 minStart
Chapter 5.12

Quadratic inequalities

Use quadratic graphs to determine solution intervals.

45 minStart
Chapter 5.13

Graphical solutions to equations

Interpret intersections of graphs to solve systems and check work.

40 minStart
Chapter 5.14

Solving equations graphically (applications)

Apply graphical methods to motion, economics, and science contexts.

40 minStart
Chapter 5.15

Trial and improvement

Use systematic trials for equations lacking analytic solutions.

35 minStart
Chapter 5.16

Equation problem solving (GCSE)

Blend all techniques to tackle real exam-style applications.

50 minStart

Next steps

Need more algebraic manipulation? Revisit Section 4, or continue into Section 6 for sequence mastery.