Simplify the expression.

(2k + 1) (k-4)

choices:

2k^2 - 7k + 4

2k^2 - 3k + 4

2k^2 + 9k + 4

2k^2 - 7k - 4

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What is the answer 11+11=4 12+12=9 13+13=?

What is the multiplicative inverse of - 25 24