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Mathematics for IGCSE & O level - Surds (Section 2 - No. 45)

What is the value of x if x + y = 6 + 3√3 and y = 2 - √3?
4+2√3
8+4√3
8-4√3
4+4√3

Explanation

x = (6 + 3√3) - (2 - √3) = 4 + 4√3

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