Which of the equations are true identities? \begin{aligned} \text{A. }&m^3-1=(m-1)(1+m+m^2) \text{B. }&(n+3)^2+2n=8n+13 \end{aligned} A. B. m 3 −1=(m−1)(1+m+m 2 ) (n+3) 2 +2n=8n+13

Hello i need some with trigonometric substitutions. [tex]\int\limits^a_b {x} \, dx[/tex]

Divide the following fractions 3/4 ÷ 2/3 1/2 8/9 9/8 2

How many of the 250 grandparents in the population would you expect to prefer online shopping with merchant a? merchant a: 4 merchant b: 6 merchant c: 2 merchant d: 3 other: 5 none: 5 answer choices: a.about 4 b.about 8 c.about 40 d.about 21