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(4 - 4√3 + 3) - (4 +4√3 + 3 + 2( 4 - 3)
4 - 4√3 + 3 - 4 - 4√3 - 3 + 2
- 8√3 + 2
2 - 8√3
ada kesalahan ketik disoal :
x2 - y2 - 2xy seharusnya pada gambar
x2 - y2 + 2xy