Posted by Ashley on Friday, May 28, 2010 at 6:50pm.
The first line is not an equation.
The second line is
x^2+16x=64
then if you are completing the square
x^2 + 16 x + 8^2 = 64 + 8^2
(x+8)^2 = 128
x+8 = +/- 8 sqrt 2
so
x = -8 +/- 8 sqrt 2 = 8 (-1 +/- sqrt 2)
or if you really mean
x^2 + 16 x + 64 = 0
then
x^2 + 16 x = -64
x^2 + 16 x + 64 = -64 + 64 = 0
(x+8)^2=0
x+8 = +/- 0
x = -8
Is where the following trinomials perfect squares.
X^2+16x+64 this is the problem is does not have equal. so could you work this for me please.
Oh !!!
(x+8)(x+8)
(x+8)^2 = x^2 + 16 x + 64
In other words it is not an equation and you do not solve for x.
The trinomial is the perfect square of (x+8)
for any x
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