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Mathematics for IGCSE & O level - Surds (Section 1 - No. 1)

Which of the following is the simplified form of 2√75 - √27?

7√3

10√3

20√3 - 3√3

10√3-3√3

Wyjaśnienie

2√75 - √27 = 2*5√3 - 3√3 = 10√3 - 3√3 = 7√3

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