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July 29, 2014

July 29, 2014

Posted by **Ashley** on Friday, May 28, 2010 at 6:50pm.

x^2+16x=64

(x=3)^2=16x-64

16x=-64

x=-4

Check this problem please

- Please check for typos -
**Damon**, Friday, May 28, 2010 at 7:48pmThe 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

- algebra -
**ashley**, Friday, May 28, 2010 at 7:54pmIs 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.

- algebra -
**Damon**, Friday, May 28, 2010 at 7:58pmOh !!!

(x+8)(x+8)

(x+8)^2 = x^2 + 16 x + 64

- algebra -
**Damon**, Friday, May 28, 2010 at 8:03pmIn 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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