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
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