Question

Simplify ( 5-√6) (5 + √6)​

Answer 1

Answer:

(a+b)(a-b)=a2-b2

a=5,b=√6

(5)^2-(√6)^2

25-6

19.

Step-by-step explanation:

i hope it will help you..

Answer 2

Answer:

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$\frac{5 + \sqrt{6} }{5 - \sqrt{6} } \times \frac{5 + \sqrt{6} }{5 + \sqrt{6} } \\ = (\frac{5 + \sqrt{6 ) {}^{2} } }{(5 {)}^{2} - ( \sqrt{6 {}^{2}) \ } } \\ = \frac{25 + 6 + 10 \sqrt{6} }{25 - 6} \\ = \frac{31 + 10 \sqrt{6} }{19}$

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