Question

If x = (2+V5)^1/2+(V5 – 2)^1/2 and
y = (2+ v5)^1/2 – (V5 - 2)^1/2 then evaluate x² +y²​

Answer 1

x²+y²= 8.

ꜱᴏʟᴜᴛɪᴏɴ ɪꜱ ɪɴ ᴛʜᴇ ᴀᴛᴛᴀᴄʜᴍᴇɴᴛ.