Question

Solve by using the perfect squares method.



x2 + 8x + 16 = 0



A.


–2


B.
4


C.


–4


D.
2

Answer 1

@Nnesha

Answer 2

isnt it -4

Answer 3

thats what i got

Answer 4

how did you get -4 show your work :=)

Answer 5

solve by using the *perfect squares method* what waz your first step ? :=)

Answer 6

sorry opn studys acting up

Answer 7

See how the coefficient on x^2 is a perfect square? (it is 1, which is 1 squared).
See also how the constant term is a perfect square? (it is 16, which is 4 squared).
Notice also that if you take the coefficient on the middle term (8) and divide it by 2 (giving you 4) and then square it, you get the product of the 1 and the 16? (4 squared is 16)

That tells us this trinomial is a perfect square. (x+4)^2
By the zero product property, we know that x+4=0, so x=-4

Answer 8

nice

Answer 9

is it right

Answer 10

yep

Answer 11

thanks

Answer 12

np