Question

Rationalise the denominator of 3+5√2 upon 3√2+9√3

Answer 1

ans. 3+5✓2*3✓2-9✓3

3✓2+9✓3*3✓2-9✓3

3+5✓2(3✓2-9✓3) = 96-72✓6=24-✓6

[(3✓2)²-(9✓3)²]=18-243=225

answer=24-✓6/225

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