Find the lowest common denominator for the fractions shown. 3a^2/a^2+a+1, 2a/a-1, a^3/a^3-1

1) a³ - 1
2)(a + 1)²(a - 1)
3)(a³ - 1)(a²+a+1)

attachment?

step-by-step explanation:

answer: 33 ( approx)

step-by-step explanation:

since, in the linear regression formula, the slope is the a in the equation y = b + ax ( by comparing it with the general equation of line y = mx + c )

where,

here given table is,

price ($), x   :           18         23       25       29       30       33

pairs sold, y :         16         13         10       8         6       2

so, ,   ,   ,

and   ,

thus, slop of the given line is,

⇒  

⇒   ≈ 33