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x2 − x + 1 = 0 αβ = 1 α + β =1 cubing on both sides α3 + β3 + 3αβ(α + β) = 1 α3 + β3 + 3 ∗ 1(1 ) = 1 α3 + β3 = -2 α3 β3 = 1 Sum of the roots=-2 product=1 Required equation is x2 + 2x + 1 = 0
The following table shows the marks obtained by five students in three subjects:
If 15 men can complete a work in 24 days, how many days will it take 10 men to complete the same work?
If tan(π/4 + θ) = 3, find tan(2θ):
1. यदि 10 वर्ष पूर्व पिता की उम्र पुत्र की उम्र से तिगुनी थ...
What will come in place of ?
4, 5, 13, 40, 104, ?.
The average age of three friends Maya, Nirmal, and Raju is 27 years. The age ratio of Nirmal to Raju is 9:5, and Maya is 11 years...
A boat can travel upstream at 12 km/h and downstream at 18 km/h. What is the speed of the boat in still water?
1. एक किलोमीटर लम्बी ट्रेन 1 किमी / घण्टा की रफ्तार से 1 ...
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A metal sphere of radius 7.35 cm is melted and cast into a cylinder of height 12 cm. Find the curved surface area of the cylinder...