Question

rationalize 1/(7-√5)​

Answer 1

Step-by-step explanation:

= 1/(7-√5)

= 1/(7-√5)= 1/(7-√5) × 1/(7+√5)

= using identity

= using identity=b(a+b)(a-b)=a²+b²

= 1/(7)²-(√5)²

= 1/(7)²-(√5)²= 1/49-5

= 1/(7)²-(√5)²= 1/49-5= 1/44

Answer 2

Answer:

$\frac{1}{7 - \sqrt{5} } \\ \\ \frac{1(7 - \sqrt{5}) }{(7 - \sqrt{5}) \times (7 - \sqrt{5}) } \\ \\ \frac{7 - \sqrt{5} }{(7) {}^{2} - ( \sqrt{5} ) {}^{2} } \\ \\ \frac{7 - \sqrt{5} }{49 - 5} \\ \\ \frac{7 - \sqrt{5} }{41}$

Step-by-step explanation:

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