1 Answer

WENDYN · Answer 1 · 2021-07-07T20:33:41+0000

Answer:

Third Choice:

$x = (-b \pm √(b^2 - 4ac))/(2a)$

Explanation:

One line has

$x + (b)/(2a) = \pm (√(b^2 - 4ac))/(2a)$

The next line's reason is that b/2a was subtracted from both sides.

The missing line is:

$x = -(b)/(2a) \pm (√(b^2 - 4ac))/(2a)$

Then it simplifies to

$x = (-b \pm √(b^2 - 4ac))/(2a)$

Please log in or register to add a comment.