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11 questions from this quiz
Disguised quadratic equations
Pattern recognition
Dimensions contain variables
x(2x+1)=15x(2x + 1) = 15x(2x+1)=15
Negative lengths are impossible
Eliminate fractions by multiplying
Use quadratic formula
21\sqrt{21}21 not perfect square
Set up equation using area formula
Area and unknown dimensions
Identify, rearrange, solve, interpret
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