Identify the conjugate of .

MATHEMATICS · Single correct · AoPS · Mathematics · Special Factorizations · Special Factorizations

Problem

Identify the conjugate of

5 + 2\sqrt{3}

. (a)

-5 + 2\sqrt{3}

(b)

2\sqrt{3} - 5

(c)

5 - 2\sqrt{3}

(d)

-5 - 2\sqrt{3}