Tuesday

September 30, 2014

September 30, 2014

Posted by **sara** on Tuesday, September 4, 2012 at 12:05am.

1. (x+5)^2 = (x+4)^2

√(x+5)^2 = √(x+4)^2

x+5 = x+4

?

2. (4x+7)^2 = 144

√(4x+7)^2 = √144

4x+7 = 12

?

3. (x-5)^2 = 30

√(x-5)^2 = √30

x-5 = ??

- math -
**Steve**, Tuesday, September 4, 2012 at 12:09amfor #1, you also have to consider

x+5 = -(x+4)

2x = -9

x = -9/2

#2: 4x+7 = ±12

x = 5/4 or -19/4

#3: x-5 = ±√30

x = 5 ± √30

- math -
**sara**, Tuesday, September 4, 2012 at 12:39amfor #1, where did you get the negative for - ( x+ 4 )

**Answer this Question**

**Related Questions**

Algergra - I am stumped! I have been working on these problems for the longest ...

Math - Hi, I am getting very frustrated. I am doing an online homework for ...

Logs. - Can you please help me with the following log. problems? thanxs! Solve ...

Chemistry - Can somebody explain how to do this? I am stuck. I've tried solving ...

Calculus - average velocity - *VELOCITY OF A CAR* Suppose the distance s (in ...

Math - I am having problems understanding how to solve problems like the ...

Math please help! - invested 2000 gains 0.2 every odd numbered month gains 0.15...

Chemistry - What is the pH of the solution created by combining 2.40 mL of the 0...

chemistry class - What is the pH of an aqueous solution at 25.0 °C that contains...

math - there's a question that I don't understand and the direction says that '...