319 prompts matching "Checking a matrix subtraction by adding back"
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Final Revision: Checking a conjugate answer by multiplying back
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IGCSE Additional Maths Y10: Checking a polynomial division by multiplying back — Common Mistakes
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Explain Back: Multiplying root a by root b
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Show All Working: Checking a rationalised answer by decimal approximation
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Explain Back: Showing distributivity fails by a counter-example
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Common Mistakes: Checking an inverse by working the operation both ways
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Final Revision: Checking an indicial solution by substitution
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IGCSE Additional Maths Y10: Solving a modulus equation algebraically by squaring — Explain It Back
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IGCSE Additional Maths Y10: Checking an index simplification by substituting a number — Exam Technique
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IGCSE Additional Maths Y10: Finding a remainder by substitution alone — Explain It Back
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IGCSE Additional Maths Y10: The area of a quadrilateral by the shoelace method — Explain It Back
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IGCSE Additional Maths Y10: Checking a graphical solution by substitution — Exam Technique
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Working backwards from Venn diagram totals
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Solving 4^x = 8^(x-1) by matching bases
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Simplifying indices before adding like terms
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Adding and subtracting like surds
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Adding two algebraic fractions with different denominators
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Solving simultaneous linear equations by substitution
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Simplifying a surd by extracting square factors
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Adding surds that need simplifying first
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