938 prompts matching "Empty set and its notation"
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Common Mistakes: Writing down the roots once the brackets are found
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Learn: Making the coefficient of x squared equal to one first
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Show All Working: Completing the square with a fractional coefficient of x
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Learn: Deriving the quadratic formula by completing the square
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Learn: The sum of the roots as minus b over a
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Show All Working: Roots equal in magnitude but opposite in sign
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Common Mistakes: Roots that are reciprocals of one another
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Learn: What makes an expression in the roots symmetric
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Learn: Making one unknown the subject of the linear equation
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Show All Working: A simultaneous pair in which the second equation is a circle
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Learn: Forming the quadratic that decides where a line meets a curve
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Show All Working: The point of contact when a line touches a curve
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Learn: What makes an expression a polynomial
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Common Mistakes: Multiplying one polynomial by another
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Show All Working: Synthetic division as a shorter route
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Learn: The statement of the remainder theorem
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Common Mistakes: The remainder theorem applied to a quartic
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Learn: The statement of the factor theorem
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Show All Working: What the factor theorem says about the roots
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Common Mistakes: Using the factor theorem before dividing
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