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Example of Derived demand, For building a house, the demand of Painter, labour, artisans, Bricks, Cements automatically increases. Cross Demand isthe ratio of percentage change in quantity demanded of a product to percentage change in price of a related product. Composite demand happens when goods or services have more than one use so that an increase in the demand for one product leads to a fall in supply of the other. E.g. milk which can be used for cheese, yoghurts, cream, butter and other products . Joint demand occurs when demand for two goods is interdependent. For example, it is no good having a printer without the ink to go with it.
I. 8y2- 2y - 21 = 0
II. 2x2+ x - 6 = 0
I. x² - 19x + 84 = 0
II. y² - 25y + 156 = 0
I. 56x² - 99x + 40 = 0
II. 8y² - 30y + 25 = 0
I). p2 + 8p + 15 = 0
II). q2 + 9q + 20 = 0
I. 4x2+ 25x + 36 =0
II. 2y2+ 5y + 3 = 0
I. x² + 11x + 24 = 0
II. y² + 17y + 72 = 0
I. 18p²- 21p + 6 = 0
II. 16q² - 24q +9 = 0
I. 6x² + 77x + 121 = 0
II. y² + 9y - 22 = 0
I. 88x² - 13 x – 56 = 0
II. 15 y² + 41 y + 28 = 0
If the roots of the quadratic equation 5x² + 4x + 6 = 0 are α and β, then what is the value of [(1/α) + (1/β)]?
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