3x²-9x+1+0 Find the discriminant

Step-by-step explanation:

The given quadratic equation is:

Comparing it with the standard form of Quadratic Equation , we get:

a = 3, b = -9 and c = 1

Discriminant = b² - 4ac

D = (-9)²-4(3)(1)

D = 81 - 12

D = 69

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.

70

step-by-step explanation: