Mathematics
Senior High

ๆ€ฅใŽใงใ™๐Ÿ’ฆ(2)ใฎ่งฃ่ชฌใงใ€ๆœ‰็†ๅŒ–ใ‚’ใ™ใ‚‹ใจaใŒ3๏ผ‹โˆš5/2ใซใชใ‚‹ใ“ใจใฏๅˆ†ใ‹ใ‚‹ใ‚“ใงใ™ใ‘ใฉใ€ใชใœ1/aใŒ3ใƒผโˆš5/2ใซใชใ‚‹ใ‚“ใงใ™ใ‹๏ผŸ
a/1=3๏ผ‹โˆš5/2ใชใ‚“ใ ใ‹ใ‚‰1/aใฏ2/3๏ผ‹โˆš5ใซใชใ‚‹ใ‚“ใ˜ใ‚ƒใชใ„ใ‚“ใงใ™ใ‹๏ผŸ

1 2 (2) a= ใฎใจใใ€ a--=Vใ‚ช a? ใ‚ซ a6+ =ใ‚ญใ‚ฏใ‚ฑใงใ‚ใ‚‹ใ€‚ 3-5 a? Q6 (3) ๅฎŸๆ•ฐ a,b, c, x, yใซใคใ„ใฆ, ๆฌกใฎ็ฉบๆฌ„ใซๅ…ฅใ‚‹้ฉๅˆ‡ใช็•ชๅทใ‚’ไธ‹ใฎ่งฃ็ญ”็พคใ‚ˆใ‚Š้ธใณ, ใใฎ็•ชๅทใ‚’ใƒž |-ๅท+ใŒ r7
+gD -3a2. +zใƒญ I D ใ‚‹ +zD rand %3D73-3ยท73322 1\2 0 2Cf +2aใƒ‹=(V5)?+2=7 2 (3-5(3+/5) 2(3+15) 2) 1-3+5-3-5.-J5 =D 2 3+V5 1_3-V5

Answers

ๅˆ†ใ‹ใ‚Šใฅใ‚‰ใ‹ใฃใŸใ‚‰ใ™ใฟใพใ›ใ‚“๐Ÿ’ฆ

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