1,331 prompts matching "Teach me solving quadratic equations by factorisation"
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Spot My Mistake: Finding the inverse of an element under a binary operation
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Worked Example: The discriminant, and what each of its three cases means
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Common Mistakes: Symmetric functions when the three roots of a cubic are involved
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Worked Example: The sum of the products of the roots of a cubic taken two at a time
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Common Mistakes: Three roots in geometric progression in a cubic
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Worked Example: The number of arrangements of n different objects in a row
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Quiz: The number of arrangements of r objects chosen from n
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Practice: Arrangements when some of the objects are identical
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Explain Back: Arrangements in which two particular objects must stay together
I have just studied arrangements in which two particular objects must stay together in my
Spot My Mistake: Arrangements in which two particular objects must be kept apart
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Common Mistakes: Arrangements restricted at the first or the last place
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Final Revision: Counting the number plates or codes that can be formed under a rule
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Common Mistakes: Sketching two trigonometric curves on the same axes to find where they meet
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Worked Example: The midpoint formula applied to a given segment
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Worked Example: The parametric form of a point on a parabola
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Practice: The mean deviation from the mean
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WAEC Prep: The standard deviation of grouped data using an assumed mean
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Worked Example: The sign convention for clockwise and anticlockwise moments
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Quiz: The principle of moments for a body in equilibrium
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WAEC Prep: A couple, and why its moment is the same about every point
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