Question

Which of the following is not performed when solving r^2+12r-6=0 by

completing the square?
(A) Add 6 to each side,
(B) Factor p + 12r - 6.
(C) Add 36 to each side.
(D) Take the square root of each side.

Answer 1

Answer is. ) B) factor p +12r - 6

Answer 2

B.) why Factor p+ 12r - 6, I did not do that below.

Explanation:

r^2+12r-6=0

solve:

r^2 + 12 r + 36 - 36 - 6 = 0

factor the trinomial by completing the square.

( r + 6)^2 -42 = 0

(r + 6)^2 = 42

r + 6 = root(42 ) or r + 6 = - root(42)

r = -6 + root(42) or r = -6 -root(42)