1,045 prompts matching "Teach me how to find the writing the inverse of a two by two matrix with the adj"
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Find sum and product of roots of x^2 + 4x - 12 = 0
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Find sum and product of roots of 3x^2 + 7x - 6 = 0
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Find sum and product of roots of x^2 - 8x + 15 = 0
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Use the remainder theorem on x^3 - 2x^2 + 3x - 4 divided by x - 1
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Use the remainder theorem on 2x^3 + x^2 - 5x + 2 divided by x + 2
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Use the remainder theorem on x^3 + 3x^2 - x - 3 divided by x - 1
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Use the remainder theorem on x^3 - 6x^2 + 11x - 6 divided by x - 2
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Spot my mistake using the remainder theorem
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When to use permutations versus combinations
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Worked example: finding and classifying a stationary point
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Worked example: find AB where A = [[1,2],[3,4]] and B = [[2,0],[1,3]]
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Worked example: find A+B and A-B where A = [[1,-2],[3,0]] and B = [[4,1],[-2,5]]
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Worked example: find a+b where a=(2,-1) and b=(-3,5)
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Worked example: find 2a-3b where a=(4,1) and b=(-2,3)
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Learn: How many rows a truth table needs
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WAEC Prep: A tautology used to justify a rule of algebra
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Spot my mistake in factorising x^2+5x+6
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Worked example: word problem leading to a quadratic
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Complete the square for x^2 + 6x + 5 = 0
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Complete the square for x^2 - 4x - 1 = 0
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