Perform the operation and simplify. $( a - 8 ) ^ { 2 }$
A) $\quad a ^ { 2 } - 8 a + 64$
B) $\quad a ^ { 2 } - 16 a + 64$
C) $\quad a ^ { 2 } - 64$
D) $\quad a ^ { 2 } + 64$
E) $\quad a ^ { 2 } + 16 a + 64$

Question

Quizplus · Accepted Answer

Using the FOIL method or the formula $(a-b)^2=a^2-2ab+b^2$, we can expand $(a-8)^2$ to get $a^2-2a\cdot8+8^2=a^2-16a+64$. Therefore, the correct answer is B.

Perform the Operation and Simplify (a−8)2( a - 8 ) ^ { 2 }(a−8)2

Perform the Operation and Simplify $( a - 8 ) ^ { 2 }$