Mathematics
Senior High
๐ ้ซ๏ผ๏ผๆฐโ ข ๐
(๏ผ)ใจ(๏ผ)ใๅใใใพใใ๐ฆ
่ฏใใใฐ ๆใใฆ้ ใใใใงใโฆ!
ๅฎใใใ้กใ่ดใใพใ๐๏ธ๐ฆ
ไธๆฌ้ณ ๆฌกใฎๆน็จๅผใฏใฉใฎใใใชๅณๅฝขใ่กจใใใ
15
(1) *โๅ4y2?ไบ6xไธ8ๅ9=0
(2) ใฟใๅ8yใผ16ใถ=0
ไธ่ผ4 9ใฒใผ16ใกไธ36ใใผ56 =0
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