521 prompts matching "Checking a rationalised answer by decimal approximation"
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Solve the logarithmic equation 2log(x) = log(x+6) + log(4)
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Solve the logarithmic equation log3(x^2) - log3(x+2) = 1
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Solve the logarithmic equation log5(x+3) + log5(2) = 2
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Simplify the surd expression sqrt(72) + sqrt(18)
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Simplify the surd expression sqrt(50) - sqrt(8)
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Simplify the surd expression (3+sqrt2)(3-sqrt2)
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Simplify the surd expression 5/(1+sqrt3)
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Simplify the surd expression (2+sqrt5)^2
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Show All Working: A quadratic whose two roots are both negative
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Show All Working: Completing the square with a fractional coefficient of x
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Show All Working: Choosing between factorising and the formula
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Show All Working: Roots equal in magnitude but opposite in sign
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Show All Working: Forming an equation whose roots are three alpha and three beta
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Show All Working: A simultaneous pair in which the second equation is a circle
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Show All Working: The point of contact when a line touches a curve
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Show All Working: Adding and subtracting two polynomials
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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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Show All Working: What the factor theorem says about the roots
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Show All Working: Factorising a polynomial with fractional roots
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