1,334 prompts matching "Practice: Collecting similar surds in an expression"
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Worked example: finding the argument in the correct quadrant
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Practice: The difference of two sets, A minus B
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Practice: Testing a binary operation for associativity
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Learn: Simplifying a surd by extracting the largest perfect square
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Practice: Rationalising a denominator of the form root a
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Spot My Mistake: Squaring a bracket that contains a surd
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WAEC Prep: Comparing the sizes of two surds without a calculator
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Worked Example: The discriminant, and what each of its three cases means
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Common Mistakes: Proving that a quadratic expression is positive for every real x
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Practice: Factorising a cubic completely once one factor is known
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Practice: Finding the third root of a cubic when two are known
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Common Mistakes: The range of values of x for which an expression stays positive
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Worked Example: The number of arrangements of n different objects in a row
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Practice: Arrangements when some of the objects are identical
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Worked Example: The difference between a permutation and a combination
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Practice: Choosing a committee that must contain one particular person
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Worked Example: Solving cos x equals a negative value, and finding both solutions
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Worked Example: The shape, period and range of the cosine curve
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Practice: The effect of a in y equals a sin x
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Practice: The equation of a line through a point with a given gradient
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