math_celebrity Administrator Staff member Aug 28, 2019 #1 Which of the following is equivalent to the sum of the expression a^2 - 1 and a + 1? A) a^2 + a B) a^3 - 1 C) 2a^2 D) a^3 a^2 - 1 + a + 1 The 1's cancel, so we're left with: a^2 + a - Answer A

Which of the following is equivalent to the sum of the expression a^2 - 1 and a + 1? A) a^2 + a B) a^3 - 1 C) 2a^2 D) a^3 a^2 - 1 + a + 1 The 1's cancel, so we're left with: a^2 + a - Answer A