Catgirl ☄☄⭐☄☄⭐⭐☄⭐☄☄⭐☄⭐☄⭐☄⭐☄☄☄⭐

Answer for 10 points show work you guys in advanced < 3

Which expression is equal to (21)(7)(3x) using the associative property? (21 · 7 · 3)x (7)(21)(3x) 32(7 + 3x) (3x)(7)(21)

Use mathematical induction to prove the statement is true for all positive integers n, or show why it is false. 1^2 + 4^2 + 7^2 + + (3n - 2)^2 = [n(6n^2-3n-1)/2]