Math, asked by dulgachkiran3, 9 months ago

rationalise
 \frac{1}{7 + 3 \sqrt{2} }

Answers

Answered by Brainlyengineer
1

Answer:

 \frac{1}{7 + 3 \sqrt{2} }

 =  \frac{1}{7 + 3 \sqrt{2} }  \times  \frac{7 - 3 \sqrt{2} }{7 - 3 \sqrt{2} }

 =  \frac{7 - 3 \sqrt{2} }{(7) {}^{2} - (3 \sqrt{2} ) {}^{2}  }

 =  \frac{7 - 3 \sqrt{2} }{49 - 18}

 =  \frac{7 - 3 \sqrt{2} }{31}

Answered by arunyadav1973
0

Step-by-step explanation:

see attatchment

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