If x2-3x+1=0, then x+1x is (x≠0)
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What is the value of [(sin 59° cos 31° + cos 59° sin 31° )÷(cos 20° cos 25° – sin 20° sin 25° )]?
What least number must be added to 213, so that the sum is completely divisible by 9?
Convert binary 10110 to decimal.
What is the sum of the first 17 terms of an arithmetic progression if the first term is -20 and last term is 28?
If a - b = 6 and ab =16, then a3 - b3 is
Which of the following quadratic equations has equal roots?
What is the value of cos 4π/3?
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