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Am nevoie urgent!! Multumesc ❗️❗️❗️

Am Nevoie Urgent Multumesc class=

Răspuns :

x+3(1+3+...+3⁹⁸)=x+3(3⁹⁹-1)/(3-1)= x+(3¹⁰⁰-3)/2

Acum

x+(3¹⁰⁰-3)/2=(3¹⁰⁰-1)/2

x-3/2=-1/2

x==3/1-1/2=2/2=1

Raspuns: x=1

Răspuns:

x = 1

Explicație pas cu pas:

Folosim formula

Sn = b₁(qⁿ - 1)/(q - 1)

x + 3 + 3² + .. +3⁹⁹ = (3¹⁰⁰ - 1)/2

x + 3(3⁹⁹ - 1)/(3 - 1) = (3¹⁰⁰ - 1)/2

x + (3¹⁰⁰ - 3)/2 = (3¹⁰⁰ - 1)/2

x = (3¹⁰⁰ - 1)/2 - (3¹⁰⁰ - 3)/2

x = (3¹⁰⁰ - 1 - 3¹⁰⁰ + 3)/2

x = (3 - 1)/2

x = 2/2

x = 1