Question

17
2 ✓ 3 + 1
Rationalise the denominator ​

Answer 1

please correct your questions

Answer 2

Answer:

To rationalize the denominator we must multiply and divide the number by the denominator's conjugate. Conjugate of denominator is -- 2 + √3. We know that, (a+b) ( a-b) = a² - b². So, (2+√3)(2-√3) = 2² -(√3)² = 4 - 3 = 1.21