Two water taps together can fill a tank in 9 3/8 hours. The tap of large...

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Two water taps together can fill a tank in 9 3/8 hours. The tap of larger diameter takes 10 hours less than the smaller one to fill the tank separately. Find the time in which each tap can separately fill the tank. Important Question question no 32 second choice Chapter 4 Quadratic Equations

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CASE-STUDY 1 Sarita donated some amount to a blind school. The amount of...

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CASE-STUDY 1 Sarita donated some amount to a blind school. The amount of donation is represented by the expression ₹ (x² + (1/x²)) Her friends wanted to know the amount donated by her. She did not disclose the amont but gave a hint that the value of the expression x + 1/x is75. Based on the above information, answer the following questions: (i) Which mathematical concept is used in the above situation? (ii) Which algebraic identity is used to calculate the amount donated by Sarita? (iii) Find the amount donated by Sarita. OR Find the value (in Rs) x³ + 1/x³ class 9 maths chapter 2 polynomials case study-based question
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