Sunday

January 25, 2015

January 25, 2015

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

**Answer this Question**

**Related Questions**

algebra - Solve the system by addition or substitution. 16x-4y=20 y=4x-4 I ask ...

Algebra - There are two solutions to | 16x - 5 | = 3. The greatest solution is ...

Math - 5(-3x - 2) - (x - 3) = -4(4x + 5) + 13 Answer Multiply factors. -15x - 10...

Pre-Calculus - Help please If f(x)=8x and g(x)=2x+1 find (fog)(x) 16x^2+8x 16x+1...

Algerbra - how do you solve 7(3x+4)=8(2x+5)+13 expand the parenthesis...I will ...

math - The question is (2x+1)^2-2(2x^2-1) in simplest form Is this correct? [(2x...

Algebra 2 - (1/16x^4 +3/8x^3 +1/8x^2-1)+ (-9/16x^4 +7/8x^2 -1) Can you please ...

Math - find any stationary points of the function g(x) = (2x-3)square root of 5+...

calculus - i need to find the derivative using chain rule: (x^2 + 2x - 6)^2 (1-x...

calc - find the derivative of y = sqrt(9 - 16x) Use the chain rule. First find ...