Question

Solve by completing the square:

7b^2 - 14b - 56= 0

Answer 1

Factor out 7 first.

Answer 2

?

Answer 3

??

Answer 4

Dude, if your gonna play games, please don't bother(:

Answer 5

\[\large 7b^2 - 14b - 56 = 0 \]


\[\large 7(b^2 - 2b - 8) = 0 \]


\[\large b^2 - 2b - 8 = \frac{0}{7} \]


\[\large b^2 - 2b - 8 = 0 \]


I'll let you continue

Answer 6

Ok so this is where I got:

Ok so I need help of figuring out wat I have to do w/ the b^2...

Answer 7

your next step is to take half of the b coefficient -2

-2/2 = -1

then you square this to get (-1)^2 = 1

Answer 8

so you add 1 to both sides