An=2n-3 find the first five terms of the sequence

-1 , 1 , 3 , 5 , 7

Step-by-step explanation:

An = = 2n - 3

n = 1;       A1 = 2*1 - 3  =  2 - 3 = -1

n =2;      A2 = 2*2 - 3 =  4 - 3 = 1

n = 3;     A3 = 2*3 - 3 =  6 - 3 = 3

n= 4;      A4 = 2*4 - 3 =  8 - 3 = 5

n = 5;     A5 = 2*5 - 3 = 10 - 3 = 7

x =±sqrt(1/3)

step-by-step explanation:

x+4/6x=1/x

multiply each side by 6x to get rid of the fractions

6x*(x+4/6x)=1/x*6x

distribute

6x^2 +4 = 6

subtract 4 from each side

6x^2 +4-4 = 6-4

6x^2 =2

divide by 6

6x^2/6 = 2/6

x^2 = 1/3

take the square root of each side

sqrt(x^2) = ±sqrt(1/3)

x =±sqrt(1/3)

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