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Given, x2 - 7x + 1 = 0 Or, x2 + 1 = 7x - [I] x + 1/x = 7 - [II] = 3 + ( x 6 + x 4 + x 2 + 1)/ 7x 3 = 3 + { x 4( x 2 + 1) + ( x 2 + 1)}/( x 2 + 1) x 2 = 3 + ( x 2 + 1) + ( x 4 + 1)}/( x 2 + 1) x 2 = 3 + ( x 4 + 1)/ x 2 = 3 + x 2 + 1/ x 2 On squaring equation [II] x2 + 1/x2 + 2 = 49 Adding '1' both sides, we get x2 + 1/x2 + 3 = 50
The ratio of cost price and selling price of a shirt is 4:5 respectively. The shirt was marked up by 35% above its cost price, and sold after giving Rs....
A shopkeeper made a profit of 60% by selling an article for Rs. 320. If he had sold it after allowing a discount of 20% on its selling price, then find ...
An item is purchased for ₹400. What should be its selling price to achieve a 15% profit?
A shopkeeper sold an article at profit of 10%. Had he bought it at 10% less and sold it for Rs. 3 more, then he would have earned a profit of 25%. Find ...
A sells an article to B at a profit of 20% and B sells it to C at a profit of 20%. If C pays ₹504 for it, what was the cost price for A?
The marked price of a dishwasher is set 25% higher than its cost price. The seller then applies two successive discounts, first 15% and then an addition...
If a shopkeeper hikes the purchasing value of an item by 56% and gives it a discount of 56% on the face value for selling it, then know the total percen...
A shirt is marked 50% above the cost price and sold after a discount of Rs.115 at Rs.545. Find the cost price of the shirt.
A merchant possesses 60 identical items, each marked up by 180% above the cost price. He sells 30 of these items at a 25% discount and the remaining 30 ...
A shopkeeper obtained an accessory for Rs. ‘a’ and marked it 170% above its cost price, then sold it after offering two successive discounts of 1000...
