The square root of 20 is an irrational number that can be expressed as 2 Times Square root of 5
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The square root of 20 can be found using a calculator or by using the approximation method. The exact value is √20 ≈ 4.47.
Use a calculator.
It is 2*sqrt(5).
The square root of 75 is 8.66 and the square root of 20 is 4.47.
Because the Square Root of negative 1 = i (The imaginary square root of negative 1.) and where if the square root of one number and of another number are multiplied together, the answer is equal to the square root of the two numbers combined. (Square root of 8 times the square root of 5 equals the square root of 40.) So... √(-20) =√20×√(-1) =√4×√5×i =2i(√5) The answer is 2i times the square root of 5. square root (-20) = square root (-1) x square root (20) square root (-20) = i x 4.47213595 square root (-20) = 4.47213595 i
square root of 20 = square root of 4 * square root of 5. square root of 4 = 2, so your answer is 2 square root of 5.