Question

5 divided by 2 root 3 + 4 Nationalised the denominator​

Answer 1

5/2√3+4 = 5×2√3-4 / 2√3+4 ×2√3-4

= write the denominator in the form of a2 - b2

10√2-20/ 12-16

= 10√2-20/-4

= 2(5√2-20)/2×-2

-5√2+20/2