SOLUTION: 1. Find all square roots of the number. 256. 2. Use a calculator to approximate the square root. Round to three decimal places. -√0.00421.

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: 1. Find all square roots of the number. 256. 2. Use a calculator to approximate the square root. Round to three decimal places. -√0.00421.      Log On


   

Question 277516: 1. Find all square roots of the number. 256.
2. Use a calculator to approximate the square root. Round to three decimal places. -√0.00421.
Answer by CharlesG2(834) About Me  (Show Source):
You can put this solution on YOUR website!
1. Find all square roots of the number. 256.
2. Use a calculator to approximate the square root. Round to three decimal places. -√0.00421.
1. x^2 = 256
x = +- 16
2. x^2 = -sqrt(0.00421) (hoping this is what you asking for here)
x^2 = -1 * sqrt(0.00421)
x = +- 0.255i