1,334 prompts matching "Use the quadratic formula on 3x^2 + 5x + 1 = 0"
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Common Mistakes: Showing that intersection distributes over union
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Quiz: Testing a binary operation for commutativity
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Practice: Testing a binary operation for associativity
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WAEC Prep: Completing a Cayley table for an operation on a small set
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Show All Working: Solving an equation written in terms of a binary operation
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Common Mistakes: A binary operation defined by arithmetic modulo n
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Quiz: Multiplying two surds and simplifying the result
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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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Show All Working: Expressing a number in the form a root b
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Final Revision: Proving that root 2 is irrational
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Worked Example: Simplifying an expression carrying both a negative and a fractional index
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Practice: Converting between index form and logarithm form
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Explain Back: The laws of logarithms for a product and for a quotient
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Spot My Mistake: The power law of logarithms
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Common Mistakes: Solving an exponential equation using logarithms
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Worked Example: The discriminant, and what each of its three cases means
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Explain Back: The range of values of k for which the roots are real
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Worked Example: Finding one over alpha plus one over beta
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Practice: Finding alpha minus beta from the sum and the product
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