Question

rationalise 7-3✓2÷7+3✓2

Answer 1

Heya!


Here is yr answer.....



$= > \frac{7 - 3 \sqrt{2} }{7 + 3 \sqrt{2} } \\ \\ = > \frac{7 - 3 \sqrt{2} }{7 + 3 \sqrt{2} } \times \frac{7 - 3 \sqrt{2} }{7 - 3 \sqrt{2} } \\ \\ = > \frac{(7 - 3 \sqrt{2)} ^{2} }{(7 + 3 \sqrt{2)}(7 - - 3 \sqrt{2} ) } \\ \\ = > \frac{7 ^{2} - 2(7)(3 \sqrt{2)} + (3 \sqrt{2)}^{2} }{ {7}^{2} - (3 \sqrt{2} )^{2} } \\ \\ = > \frac{49 - 42 \sqrt{2} + 18 }{49 - 18} \\ \\ = > \frac{67 - 42 \sqrt{2} }{31}$


Hope it hlpz.....