Question
If x+ 1/x = 3, then find the value of
2x/(3x²-5x+3)Solution
2x/(x (3x-5x+ 3/x )) ⇒ 2/((3x+ 3/x)-5) ⇒ 2/(3(x+ 1/x)-5) ⇒ 2/(3 ×3 -5) ⇒ 2/(9 -5) = 0.5
Average of first 4 numbers is 1.5 times the average of the next 2 numbers. If the average of all 6 numbers is 30, find the sum of the last 2 numbers.
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