1,322 prompts matching "Simplifying the answer once the denominator is rational"
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Spot My Mistake: Forming an equation whose roots are alpha squared and beta squared
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Learn: The degree of a polynomial and its leading coefficient
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Common Mistakes: Adding, subtracting and multiplying two polynomials
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Learn: The sum of the roots of a cubic read from its coefficients
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Quiz: The product of the roots of a cubic
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Common Mistakes: Three roots in geometric progression in a cubic
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Learn: Solving a linear inequality, and reversing the sign on dividing by a negative
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Learn: The meaning of n factorial, and how to evaluate it
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Quiz: The number of arrangements of r objects chosen from n
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Spot My Mistake: Arrangements in which two particular objects must be kept apart
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Learn: The meaning of n choose r, and how to evaluate it
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Common Mistakes: Selections in which at least one of a kind must appear
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Learn: The Pythagorean identity, sin squared plus cos squared equals one
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Quiz: The compound angle formula for sine of A plus B
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Quiz: Solving tan x equals a given value, and the period of the tangent
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Spot My Mistake: Solving an equation by first applying a Pythagorean identity
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Learn: The shape, period and range of the sine curve
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Quiz: The tangent curve and its asymptotes
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Quiz: The gradient of the line through two points
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Learn: The equation of a circle with its centre at the origin
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