Question

what is $(2k - 8)(8k + 1)$?
a. $16k^2 - 62k - 8$
b. $16k^2 - 60k - 8$
c. $14k^2 - 62k - 8$
d. $16k^2 - 64k - 9$

Explanation:

Step1: Apply FOIL method

$(2k-8)(8k+1) = 2k\cdot8k + 2k\cdot1 + (-8)\cdot8k + (-8)\cdot1$

Step2: Calculate each term

$= 16k^2 + 2k - 64k - 8$

Step3: Combine like terms

$= 16k^2 - 62k - 8$

Answer:

a. $16k^2 - 62k - 8$