Help please I’m so confused I’ll mark you brainless

no they are not equivalent

Step-by-step explanation:

n (4n^2-1)

4n^3-n

basically you need to multiply 2n+1 and 2n-1 to get (4n^2-1) and then multiply n. in the ends. they arent equivalent

the terms of a geometric sequence can be found by beginning with the first term and multiplying by the common ratio repeatedly. a recursive formula for a geometric sequence with common ratio r is given by an=ran−1 a n = r a n − 1 for n≥2 n ≥ 2 .

step-by-step explanation:

180°

step-by-step explanation:

sum of equilateral triangle=180°

< n=60°

< m=120°°[angle supplementary of equilateral angle]

< m+< r+< x=360°(sum of exterior angle of triangle)