Find the product
(2n + 2)(2n - 2)
4.2 + 40 - 4
4n2-4
42-4n-4
4.2 + 2n - 4

4n^2-4

Step-by-step explanation:

4n^2-4n+4n-4=4n-4

the answer is b

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)