5/2, 5 + 2, 5 + .... + 2, 5 - √2, 5 = -2, 5)^2, 5 +2, 5 - 2, 5; -2, (√5 + √2)², 5 х 2, 5 ; 2), 5 : 2, 5) – (-2, 5)+(-2, 5^2, √√5-√√2, 5= 2, 5 - ( - 2, =5 (2), √(√5-√2), 5);(2, 5 2, 5 × 2 = …, 5 × 2 = ….