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Square root of 3 x^2 times square root of 4x

User Pabigot
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\bf √(3x^2)\cdot √(4x)\implies √(3x^2\cdot 4x)\implies √(12x^2x)\implies √(4\cdot 3\cdot x^2x) \\\\\\ √(2^2\cdot 3\cdot x^2x)\implies 2x√(3x)

User Hu
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