Posts

Video explaining how to derive quadratic formula

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Exponential equations

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Indices

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Simultaneous linear equations and quadratic equations combined – Question 2 - use of difference of two squares

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Simultaneous linear equations and quadratic equations combined – the use of difference of two squares

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Ratios: Question 3 – Sharing according to amount and duration of investment

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Ratios: Question 2 – Sharing according to ages or seniority

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Mathematical Ratios

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Percentages: Question 8 - using minimum wage to calculate increase in wage bill

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Percentages: Question 7 - distribution chain and calculation of final profit

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Percentages: Question 6 – Cash discount and percentage profit

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