993 prompts matching "Rationalising and then cancelling a common factor"
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Worked example: a GP with first term 100 and common ratio 0.5, find the sum to infinity
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Worked example: an AP where the 4th term is 15 and the 9th term is 35, find the first term and common difference
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Worked example: a GP where the 2nd term is 6 and the 5th term is 162, find the first term and common ratio
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Worked example: write the converse, inverse and contrapositive of 'if a number is even, then it is divisible by 2'
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Common command word mistakes SS2 students make
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Common Mistakes: Checking a completed square by expanding it again
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Common Mistakes: A sign error in the formula, and how to catch it
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Common Mistakes: A symmetric function needing the sum and product twice over
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Common Mistakes: A word problem giving one linear and one quadratic equation
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Common Mistakes: A line and a curve meeting once without the line being a tangent
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Common Mistakes: The degree of the quotient and of the remainder
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Common Mistakes: Writing the converse, inverse and contrapositive of one statement
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Common Mistakes: Deciding between tautology, contradiction and contingency
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Common Mistakes: The link between Pascal's triangle and combinations
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IGCSE Additional Maths Y11: A composite region built from a rectangle and a sector — Common Mistakes
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IGCSE Additional Maths Y11: Permutations counted by choosing first and arranging after — Common Mistakes
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IGCSE Additional Maths Y11: Finding a curve from its gradient function and one point — Common Mistakes
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Spot the examiner's trick in a factorisation question
I am in SS 2. Give me a quadratic equation exam question that has a common trap, such as a
Teach me quadratic trinomial factorisation
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Explain factorising quadratics back to me
Act as my SS2 Further Maths tutor. I want to check my understanding of factorising quadrat