Lesson
Lesson-2.1.15- Change the subject of formulas. e.g. change the subject of a formula where: ??? the subject appears twice ??? there is a power or root of the subject.
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Lesson-2.1.14- Solve quadratic equations by factorization, completing the square and by use of the quadratic formula. Includes writing a quadratic expression in completed square form. Candidates may be expected to give solutions in surd form. The quadratic formula is given in the List of formulas.PreviousLesson-2.1.16- Represent and interpret inequalities, including on a number line. When representing and interpreting inequalities on a number line: ??? open circles should be used to represent strict inequalities () ??? closed circles should be used to represent inclusive inequalities (???, ???) e.g. ??? 3 ??? x < 1Next