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Square root of 7x plus the square root of 28x
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Square root of 7x plus the square root of 28x

User Fjlksahfob
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√(7x) + √(28x) \\√(7x) + √(4 * 7x) \\√(7x) + √(4)√(7x) \\√(7x) + 2√(7x) \\3√(7x)
User Greg Kennedy
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