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a=5/(2!×3) + (5×7)/(3!×3^2) +(5×7×9)/(4!×3^3) + ......... Find a^2+4a ???? Question no. 73 from the uploaded image

a=5/(2!×3) + (5×7)/(3!×3^2) +(5×7×9)/(4!×3^3) + ......... Find a^2+4a ???? 
 
Question no. 73 from the uploaded image

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Grade:12th pass

1 Answers

Saurabh Koranglekar
askIITians Faculty 10335 Points
4 years ago
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