For any nonnegative real number b, (square root of 5)^2 = _

Simplify (a/b - b/a) times (a - a^2/a+b) a - a^2/a=b is a mixed number

The distance of a chord from the centre of a circle is 12cm and the lenght of the chord is 10cm. find the radius of the circle

Select the correct answer from each drop-down menu. a system of equations and its solution are given below. system a complete the sentences to explain what steps were followed to obtain the system of equations below. system b to get system b, the equation in system a was replaced by the sum of that equation and times the equation. the solution to system b the same as the solution to system a.]