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If (\sqrt{5}) is assumed rational and written as (\sqrt{5}=\frac{x}{y}), which algebraic step correctly leads to (x^2=5y^2)?

Answer and explanation

Correct answer: First square, then multiply both sides by (y^2)

Step 1: Squaring (\sqrt{5}=\frac{x}{y}) gives (5=\frac{x^2}{y^2}). Step 2: Multiplying both sides by (y^2) gives (x^2=5y^2). Step 3: Remember the condition (y\neq0) while removing the denominator.

Related tags

Real-NumbersRoot5AlgebraSquaringProof Of Irrationality Of √2√3√5Proof Of Irrationality Of 2 3 5Real NumbersMathematics

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