445 prompts matching "How many roots a cubic equation has"
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Final Revision: Expressing a rationalised answer in the form a root b over c
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Quiz: Rationalising a denominator of the form one over 2 plus root 3
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Spot My Mistake: Simplifying the denominator once the conjugate has been used
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Show All Working: A conjugate where the surd term comes first
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Worked Example: Squaring both sides safely when solving a surd equation
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Explain Back: Solving an equation where the surd must be isolated first
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Spot My Mistake: Solving a surd equation that leads to a quadratic
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Final Revision: A word problem that leads to an equation in surd form
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Show All Working: Evaluating a repeated operation such as a*(b*c)
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Show All Working: Showing a set is not closed by a single counter-example
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Show All Working: An operation that is associative but not commutative
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Explain Back: Showing distributivity fails by a counter-example
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Show All Working: Using distributivity to simplify an expression
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Show All Working: An element with no inverse under a given operation
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Show All Working: Simplifying an expression with letters and indices
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Show All Working: Simplifying an expression that mixes the index types
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Learn: Solving an equation by writing both sides to the same base
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Worked Example: Solving an indicial equation where one side must be factorised first
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Quiz: An indicial equation that becomes a quadratic in a power
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Explain Back: An indicial equation with the unknown in the exponent on both sides
I have just studied an indicial equation with the unknown in the exponent on both sides in