√48/√75 is rational or irrational
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(0)² = (u)² + 2 × (-9.8) × 19.6
\longrightarrow⟶ 0 = u² - 19.6 × 19.6
\longrightarrow⟶ 0 = u² - (19.6)²
\longrightarrow⟶ (19.6)² = u²
• Square root both side
\longrightarrow⟶ √(19.6)² = √u²
\longrightarrow⟶ u = 19.6
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