Factor completely 8x2 − 4x − 84.

4(2x − 3)(x + 7)
4(2x + 3)(x − 7)
4(x − 3)(2x + 7)
4(x + 3)(2x − 7)

The sum of two numbers is 86, and their difference is 20. find the two numbers

Answer for 10 points show work you guys in advanced < 3

Alcoa was $10.02 a share yesterday. today it is at $9.75 a share. if you own 50 shares, did ou have capital gain or loss ? how much of a gain or loss did you have ? express the capital gain/loss as a percent of the original price