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[3x +1√3x - 1√3x - 1) - 9x² -60x-100-9x² - 12x-4+ 9x] : 3/2 - √²⁵/₄=
[-60x-18x²-105] :³/₂-⁵/₂=[-60x-18x²-105] *²/₃-⁵/₂ =[-60*(-1)-18*(-1)²-105]*²/₃-⁵/₂=[60-18-105]*²/₃-⁵/₂=-⁶³/₁*⅔-⁵/₂=¹²⁶/₃-⁵/₂=
-²⁵²/₆-¹⁵/₆=-²⁶⁷/₆=-44½
√20¼ + (2a + 1)(2a - 1) - ½(a - 3)² - a/2(5a + 7)=
√⁸¹/₄+4a²-2a+2a-1-½(a²-6a+9)-5a² /2+7a/2=
⁹/₂+4a²-1-½a²+3a-⁹/₂-5a² /2+7a/2=⁷/₂a²-1+3a-5a² /2+7a/2=
⁷/₂*(¾)²-1+3*¾-5(¾)²/2+7*¾ / 2=
⁶³/₃₂-¹/₁+⁹/₄-⁴⁵/₁₆ / 2+²¹/₄ / 2=⁶³/₃₂-¹/₁+⁹/₄-⁴⁵/₁₆*½+²¹/₄*½=
⁶³/₃₂-¹/₁+⁹/₄-⁴⁵/₃₂+²¹/₈=¹⁴²/₃₂=4⁷/₁₆