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" 4.If "x=(5)/((2!).3)+(5.7)/((3!).3^(2)...

" 4.If "x=(5)/((2!).3)+(5.7)/((3!).3^(2))+(5.7.9)/((4!).3^(3))+cdots," then find the value of "x^(2)+4x

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If x=(5)/((2!).3)+(5.7)/((3!).3^(2))+(5.7.9)/((4!).3^(3))+…. then find the value of x^(2)+4x.

If x=(5)/((2!).3)+(5.7)/((3!).3^(2))+(5.7.9)/((4!).3^(3))+…. then find the value of x^(2)+4x.

If alpha=(5)/(2!3)+(5.7)/(3!3^(2))+(5.7.9)/(4!3^(3)),.... then find the value of alpha^(2)+4 alpha

2 + (5)/(2!3) + (5.7)/(3!3^2) + (5.7.9)/(4!3^2) + …..oo =

If x=-3 find the value of 4x^2-5x+3

x=(2*5)/((2!)3)+(2*5*7)/((3!)3^(2))+(2*5*7*9)/((4!)3^(3))+..... then x^(2)+8x+8=

(3.5)/(1!)x+(4.6)/(2!)x^(2)+(5.7)/(3!)x^(3)+....=

If (2x)/3=(4y)/5=(7z)/9 then find the value of (4x+12y-21z)/(3y) .

If (5x-7)/(3)+2 =(4x-3)/(4)+4x , then the value of (8x+5) is