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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