Step-by-step explanation: just use (a+b)(a-b) = [tex]a^{2} – b^{2}[/tex][tex](4+\sqrt{3}) (4-\sqrt{3)} = 4^{2} – (\sqrt{3} )^{2} = 16 – 3 = 13[/tex] answer is 13 Log in to Reply

Step-by-step explanation:just use (a+b)(a-b) = [tex]a^{2} – b^{2}[/tex][tex](4+\sqrt{3}) (4-\sqrt{3)} = 4^{2} – (\sqrt{3} )^{2} = 16 – 3 = 13[/tex]

answer is 13