turkey-yks 2010 Q4

turkey-yks · Other · ygs Indices and Surds Algebraic Expansion and Simplification

$$( a + 1 ) ^ { 2 } - ( a - 1 ) ^ { 2 }$$
Which of the following is this expression equal to?
A) a
B) $2 a$
C) $3 a$
D) 4 a
E) $5 a$

$$( a + 1 ) ^ { 2 } - ( a - 1 ) ^ { 2 }$$

Which of the following is this expression equal to?\\
A) a\\
B) $2 a$\\
C) $3 a$\\
D) 4 a\\
E) $5 a$