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=2√2(√2+√6)-√6(√2+√6)
=2√4+2√12-√12-√36
=4+√12-6
=√12-2
2.) 3√2 / 5+2√3
= 3√2 / 5+2√3 × 5-2√3 / 5-2√3
=3√2(5-2√3) / (5+2√3)(5-2√3)
=15√2-6√6 /25-4×3
=15√2-6√6/13
3.) 2+√3 / 2-√3
= 2+√3 / 2-√3 × 2+√3 / 2+√3
=4+4√3+3 / 4-3
= 7+4√3
/ (per)
R★7
♪♥♪