Multiply the radical expressions. $$( 6 - \sqrt { 13 } ) ( 6 + \sqrt { 13 } )$$
A) $- 133$
B) 23
C) 49
D) $36 - \sqrt { 13 }$

Name: Multiply the radical expressions. \[( 6 - \sqrt { 13 } ) ( 6 + \sqrt { 13 } )\] A) $- 133$ B) 23 C) 49 D) $36 - \sqrt { 13 }$
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Quizplus · Accepted Answer

This is an application of the difference of squares formula, $a^2 - b^2 = (a - b)(a + b)$. Here, $a = 6$ and $b = \sqrt{13}$, so the expression simplifies to $6^2 - (\sqrt{13})^2 = 36 - 13 = 23$.

Multiply the Radical Expressions (6−13)(6+13)( 6 - \sqrt { 13 } ) ( 6 + \sqrt { 13 } )(6−13​)(6+13​)

Multiply the Radical Expressions $( 6 - \sqrt { 13 } ) ( 6 + \sqrt { 13 } )$