Solve the inequality 2 - x > x\(^2\).

If α and β are the roots of the equation 3x\(^2\) + 5x - 2 = 0, find the value of 1/α + 1/β

A frustrum of pyramid with square base has its upper and lower sections as squares of sizes 2m and 5m respectively and the distance between them 6m. Find the height of the pyramid from which the frustrum was obtained.

An equilateral triangle of side √3cm is inscribed in a circle. Find the radius of the circle.