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10. Calculează: a) (2+√3)²; b) (2√√/3-1)²; c)(√3+1)(√3-1); d) (√3-√2)(√3+√2); X√₂-11²=2x-2 X√2 +1 2 x + √2] =4x2 +8x+4 h) (2x + √2)². e) (√5+2)(√5-2); f) (3√2-2√3)²; g) (3√3+2√//2)²; h) (3√2-2√3)(3√2+2√3)​