521 prompts matching "Checking a rationalised answer by decimal approximation"
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WAEC Prep: What the formula gives when the discriminant is negative
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Quiz: Finding the sum and the product without solving the equation
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Spot My Mistake: Finding a missing coefficient from a stated product of roots
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Quiz: The value of one over alpha squared plus one over beta squared
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Spot My Mistake: The value of alpha over beta plus beta over alpha
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WAEC Prep: Forming an equation whose roots are alpha plus one and beta plus one
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Quiz: Solving the quadratic that results from the substitution
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Spot My Mistake: A pair with equal roots, meaning one solution only
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WAEC Prep: A pair that gives no real solution at all
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Quiz: The condition for two points of intersection
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Spot My Mistake: Finding the values of c for which a line is a tangent
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WAEC Prep: Finding the values of m for which a line cuts a curve twice
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Quiz: The leading term and the constant term
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Spot My Mistake: A polynomial written in descending powers
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WAEC Prep: Expressions that are not polynomials, and why not
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Spot My Mistake: A division that leaves a linear remainder
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Spot My Mistake: Finding two coefficients from two remainder conditions
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WAEC Prep: The remainder theorem checked against long division
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Quiz: Which values are worth testing as factors
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Spot My Mistake: The factor theorem applied to a quartic
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