1,483 prompts matching "Halving the coefficient of x and squaring it"
Worked example: Solving a quadratic with the formula
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Spot my mistake: Using theorems and riders to solve
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Worked example: Finding the interquartile range of a set
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Another worked example: A problem that changes base part of the way through
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Another worked example: Finding the original quantity after a decrease in a given ratio
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Extra quiz: Disjoint sets, and how to tell them apart
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Another worked example: Using a Venn diagram with three sets
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Another worked example: A pair of simultaneous equations from a word problem
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Another worked example: Factorising a quadratic whose leading coefficient is not one
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Extra quiz: Identifying the gradient and intercept from a drawn line
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Another worked example: Showing that the sum of the exterior
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Another worked example: Why the mode of grouped data is only an estimate
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Another worked example: Finding an angle with the inverse tangent
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More practice: Using the special angles 30, 45 and 60 degrees
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Another worked example: Finding a shorter side with Pythagoras
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Extra quiz: Reading and calculating time using the 12-hour
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More practice: Calculating with money in naira and kobo
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Another worked example: Calculating the median of a set
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Another worked example: Substituting one equation into the other to eliminate a letter
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Another worked example: Finding an endpoint from the midpoint and the other end
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