Need to calculate the square root of a number with a handheld calculator or looking to buy a new calculator? To find the square root of a complex number, use the following equation:Ĭ = (1/square root of 2) x square root of ĭ = (sign of b/square root of 2) x square root of Įxample: the square root of 3-5i = c + diĭ = (-1/square root of 2) x square root of = (square root of 5) x (square root of i) To calculate the square root of an imaginary number, find the square root of the number as if it were a real number (without the i) and then multiply by the square root of i (where the square root of i = 0.7071068 + 0.7071068i) = (square root of 5) x (square root of -1) ( where i represents an imaginary number and i = square root of -1) To calculate the square root of a negative number, find the square root of the same positive number and multiply by "i". The square root of a positive number can be calculated by: If you see an equation like N 2 = 27, you can solve for N by taking the square root of 27 which basically to solve for a squared variable in an equation.to find the solutions to quadratic equations.to solve for the length of a side of a right triangle (Pythagorean Theorem).to solve for the distance between two points (Pythagorean Theorem).See: square root symbol if you need to add the symbol to a text document. √ refers to the principal (positive) square root only.) (With the exception that the radical sign Thus all of the following are equivalent: "Square root" can be abbreviated as "sqrt" Example: sqrt(2) = 1.4142136 In exponential notation, it can be represented by: N 1/2 The square root of a number N is commonly represented by: The square root of a number is a value that when multiplied by itself equals the original number.Įxample: The square root of 9 = 3.
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