1,161 prompts matching "Checking a completed square by expanding it again"
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WAEC Prep: The number of elements in the union of two sets
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Show All Working: A three-set Venn diagram drawn from a subject survey
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Common Mistakes: Showing that intersection distributes over union
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Final Revision: The power set, and how many subsets a set of n elements has
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Spot My Mistake: Finding the inverse of an element under a binary operation
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WAEC Prep: Completing a Cayley table for an operation on a small set
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Final Revision: Deciding whether a set under an operation forms a group
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Quiz: Multiplying two surds and simplifying the result
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Explain Back: Rationalising a denominator of the form a plus root b using the conjugate
I have just studied rationalising a denominator of the form a plus root b using the conjug
Spot My Mistake: Squaring a bracket that contains a surd
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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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Learn: The multiplication and division laws of indices used together
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Learn: The sum and the product of the roots read from the coefficients
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Quiz: Forming a quadratic equation whose roots are given
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Explain Back: The range of values of k for which the roots are real
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Spot My Mistake: Forming a new equation whose roots are the reciprocals of the original
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WAEC Prep: Forming an equation whose roots are each two more than the original
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Quiz: Finding alpha cubed plus beta cubed
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WAEC Prep: Forming an equation whose roots are alpha over beta and beta over alpha
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