Question

Rationalise 6-4 root 2 /6+4 root 2

Answer 1

Answer:

$\frac{6 - 4 \sqrt{2} }{6 + 4 \sqrt{2} } \\ \\ = \frac{6 - 4 \sqrt{2} }{6 + 4 \sqrt{2} } \times \frac{6 - 4 \sqrt{2} }{6 - 4 \sqrt{2} } \\ = \frac{ {(6 - 4 \sqrt{2} )}^{2} }{ {(6)}^{2} - {(4 \sqrt{2} )}^{2} } \\ = \frac{36 + 32 - 8 \sqrt{2} }{36 - 32} \\ = \frac{68 - 8 \sqrt{2} }{4} \\ = \frac{4(17 - 2 \sqrt{2} )}{4} \\ = 17 - 2 \sqrt{2}$

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Answer 2

Answer:

answer is 17 -2root 2

Step-by-step explanation:

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