Solve by factoring the trinomial as a binomial square and then use the square root method. Round to the nearest tenth if necessary.

x2 + 16x + 64 = 81

A. {9, -9}
B. {-8, 9}
C. {-17, 1}
D. no real solution

Question

Solve by factoring the trinomial as a binomial square and then use the square root method. Round to the nearest tenth if necessary.

x2 + 16x + 64 = 81

A. {9, -9}
B. {-8, 9}
C. {-17, 1}
D. no real solution

anonymous · Answer

$$x^2+16x+64=81$$
$$(x+4)^2=81$$
$$x+4=9$$ or $$x+4=-9$$ 
$$x=5$$
or 
$$x=-13$$

anonymous · Answer

...... wait....
?

anonymous · Answer

i am wrong  sorry

anonymous · Answer

$$(x+8)^2=81$$
$$x+8=9$$
$$x+8=-9$$
$$x=1$$
$$x=-17$$

anonymous · Answer

that is what i get for rushing.

anonymous · Answer

Haha (: Thanks. Your so effing helpful!!!!!!!!

anonymous · Answer

must be getting tired.

anonymous · Answer

promise i will be more careful

anonymous · Answer

=3 Ahww! 
I am totally getting free answers from you!! And your totally being nice!! =3 If i didnt have a boyfriend i would stalk you .. lmfao totally kidding ^^ i just like to use my name to my advantage ^^

anonymous · Answer

O-o_Be-Creepy_o_O i cannot even type it.  where did it come from?

anonymous · Answer

Haha idk i used my blonde imagination ^_^ im very creative!! (:

hero · Answer

Wow, this is old

hero · Answer

looks like somebody misses creepy :D