Алгебра | 7 класс Помогайте
Упростите выражения :
1 ) ( √6 + √10 ) * 2√2 - 2√12 ;
2) (2√5 - 7) ² + 28√5 ;
3) [tex] \frac{3 \sqrt{30} - 2 \sqrt{42} }{ \sqrt{45} - \sqrt{28} } [/tex]
4) [tex] \frac{7-3 \sqrt{2} }{7+3 \sqrt{2} } + \frac{7+3 \sqrt{2} }{7-3 \sqrt{2} } [/tex]
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