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If x²+4y²=40 and xy=6, what will be the value of x+2y? Please explain how you arrived at your answer.
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Running head: MATHEMATICS
1
Solving Quadratic Equations
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MATHEMATICS
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Solving Quadratic Equations
Solve the following equation
𝑥 2 + 4𝑦 2 = 40; If xy = 6; Find x + 2y
Solution
6
Make x the subject; so x = 𝑦
6 2
Substitute x in the equation, theref...
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