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Number systems — MATHS STD 9 — Question

Rajasthan BoardEnglish MediumSTD 9MATHSNumber systems1 Mark
Question
$(-2-\sqrt{3})(-2+\sqrt{3})$ when simplified is:
✓

Answer

  1. Positive and rational.
    Solution:
    $(-2-\sqrt{3})(-2+\sqrt{3})$
    $=(-2)^2-(\sqrt{3})^2$
    $=4-3$
    $=1$
    Positive and rational

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