√(5.3)²=
√(-3.7)²=
√(0.8)²=
√(6.91)²=
√9⁴=
√(-3)⁸=
√(-0.4)⁶=
√4⁶=
√2⁶-5⁴=

с нулевой степенью точно верно?

точно верно

√(5,3)² = 5,3√(0,8)² = 0,8√(6,91)² = 6,91√9⁴ = 9² = 81√(-3,7)² = 3,7√(-3)⁸ = 81√(-0,4)⁶ = 0,064√(-0,4)⁰ = 1√4⁰ = 1√4⁶ = 64√2⁰-5⁴ = 1 - 5⁴ = -624√2⁶-5⁴ = 8-5⁴ = 617