Solve $(13 + x) (13 - x)$

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Solution

$(13 + x) (13 - x)$

$= 13^{2} - x^{2}$

$= 169 - x^{2}$

$[∵ (a + b) (a - b) = a^{2} - b^{2}]$

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Similar questions

\frac{9}{3} \div \frac{4}{6} \times \frac{13}{18} - \frac{3}{5} =

x \frac{13}{20}

lim x \to 1 \frac{1 - x^{\frac{1}{3}}}{1 - x^{\frac{1}{4}}} =

Solve

13x + 11y = 70

11x + 13y = 74

|x + \frac{1}{3}| > \frac{8}{3}

∣ ∣ x + \frac{1}{3} ∣ ∣ > \frac{8}{3}

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