1,045 prompts matching "The inverse of a 2 by 2 matrix with a fractional determinant"
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Common Mistakes: Checking a completed square by expanding it again
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Final Revision: Why completing the square always works
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Show All Working: Choosing between factorising and the formula
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Spot My Mistake: Finding a missing coefficient from a stated product of roots
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Final Revision: One root twice the other, and what that gives
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Learn: What makes an expression in the roots symmetric
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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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Quiz: Dividing a quartic by a quadratic
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Show All Working: Synthetic division as a shorter route
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Show All Working: A remainder of nought, and what it means
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Final Revision: A word problem that uses the remainder theorem
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Show All Working: What the factor theorem says about the roots
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Final Revision: A factor theorem question set in the WAEC style
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Quiz: Factorising a polynomial by grouping terms
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Spot My Mistake: Building a truth table column by column
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Learn: The conditional statement, if p then q
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Learn: The biconditional, p if and only if q
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Show All Working: The distributive laws in logic
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Final Revision: A biconditional used in a mathematical definition
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