Mathematics for IGCSE & O level - Surds (Section 2 - No. 23) | ExamPlay

Mathematics for IGCSE & O level - Surds (Section 2 - No. 23)

Simplify (5 + √3)(2 - √3).

7 - 3√3

13 - 3√3

7 + 3√3

13 + 3√3

Explanation

(5 + √3)(2 - √3) = 10 - 5√3 + 2√3 - 3 = 7 - 3√3

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