31. Efectuați calculele: 2√216+2√3(√48-2√18)-2√2(√32-√12): b) 2√150 +2√3 (3√12-√50)-√2(√18-√48); √24 [√150-√8 (√75-√48)]-√54 [√216-√27 (√72-√50)]. 32. Efectuati calculele​