Question

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Answer 1

6.
$( \sqrt{7} - \sqrt{6} )(3 \sqrt{7} - 2 \sqrt{6} )$

$= ( \sqrt{7} )(3 \sqrt{7} ) + ( \sqrt{7} )( - 2 \sqrt{6} ) + ( - 6)(3 \sqrt{7} ) + ( - \sqrt{6} )( - 2 \sqrt{6} )$

$= 21 - 2 \sqrt{42} - 3 \sqrt{42} + 12$

$= 33 - 5 \sqrt{42}$
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7.

${a}^{n} + {a}^{x}$

None

Answer 2

Answer:

Step-by-step explanation:

6.

( \sqrt{7} - \sqrt{6} )(3 \sqrt{7} - 2 \sqrt{6} )

= ( \sqrt{7} )(3 \sqrt{7} ) + ( \sqrt{7} )( - 2 \sqrt{6} ) + ( - 6)(3 \sqrt{7} ) + ( - \sqrt{6} )( - 2 \sqrt{6} )

= 21 - 2 \sqrt{42} - 3 \sqrt{42} + 12

= 33 - 5 \sqrt{42}  

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7.

{a}^{n} + {a}^{x}  

None