Question

if a = √5+1÷√5-1 and b = √5-1 ÷√5+1 then 3a^2 + 5ab + 3 b^2÷3a^2-5ab+3b^2​

Answer 1

➢ᴍᴀᴋᴇ ᴍᴇ ʙʀᴀɪɴɪsᴛ ᴀɴs ɪғ ʏᴏᴜ ɢᴇᴛ ʜᴇʟᴘ᭄

$a=3–√+2–√3–√−2–√$

$=(3–√+2–√)(3–√+2–√)(3–√−2–√)(3–√+2–√)=(3+2)(3+2)(3−2)(3+2)</p><p>=(3–√+2–√)23−2=(3+2)23−2</p><p>=((3–√)2+(2–√)2+2(3–√)(2–√)=((3)2+(2)2+2(3)(2)</p><p>=3+2+26–√=3+2+26</p><p>=5+26–√=5+26</p><p>b=3–√−2–√3–√+2–√b=3−23+2</p><p>=(3–√−</p><p>$