Math, asked by salehakaynat79, 9 months ago


 \ \frac{7 +  \sqrt{2} }{7 -  \sqrt{2} }

Answers

Answered by Mahima2007
2

Answer:

answer is 16+14√2/12

Step-by-step explanation:

(7+√2)/(7-√2)

rationalise the denominator

(7+√2)/(7-√2) × (7+√2)(7+√2)

(7+√2)²/7²-(√2)²

7²+(√2)²+7(√2)(2) / 14-2

14+2+14√2/12

16+14√2/12

hope it helps you

Thank my answer and Mark as brainliest...

Answered by Anonymous
7

Answer:

heya mate ☺

 \frac{7 +   \sqrt{2} }{7 -  \sqrt{2} }  \\  \\  =  \frac{7 +  \sqrt{2} }{7 -  \sqrt{2} }  \times  \frac{7 +  \sqrt{2} }{7 +  \sqrt{2} }  \\  \\  =  \frac{(7 +  \sqrt{2}) ^{2}  }{7 ^{2}  - ( \sqrt{2} ) ^{2} }  \\  \\  =  \frac{7 ^{2} + 2 \times 7 \times  \sqrt{2}  + ( \sqrt{2} ^{2} )  }{49 - 2}  \\  \\  =  \frac{49 + 14 \sqrt{2}  + 2}{47}  \\  \\  =  \frac{51 + 14 \sqrt{2} }{47}

hope it helps u mate

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