Start with x2 + 4x = 12 and complete the square, what is the equivalent equation?
(x + 2)2 = 16
(x + 2)2 = 14
(x + 4)2 = 16
(x + 4)2 = 28
Submit
EVO

The second one is the answer edg.

Sequoia national park  /  inyo national forest, california, u.s. mount whitney is the tallest mountain in california, as well as the highest summit in the contiguous united states and thesierra nevada—with an elevation of 14,505 feet (4,421 m).