Question

(4√3+2√5)(4√3-2√5) Hhhhhhjjj

Answer 1

Answer:

= 28

Step-by-step explanation:

$= (4\sqrt{3}+2\sqrt{5})(4\sqrt{3}-2\sqrt{5}) \\\\ =4\sqrt{3}(4\sqrt{3}-2\sqrt{5})+2\sqrt{5}(4\sqrt{3}-2\sqrt{5}) \\\\ = 16(3)-8\sqrt{15}+8\sqrt{15}-4(5) \\\\ =48-20 \\\\ =28$

$you \ can \ also \ solve \ it \ by \ using \ identity, \\ (a+b)(a-b)=a^2-b^2$

hope it helps..!