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

I tried solving these problems and get stuck . Can you please tell me what am I suppose to do next or did I do them all wrong

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 12:09am
for #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 12:39am
for #1, where did you get the negative for - ( x+ 4 )

## Answer This Question

## Related Questions

- grade 11 math - I don't get how to do this. I'm so lost please help me. ...
- Trigo! - Ok, i've tried this sum a million times and i cant get an answer. ...
- Algebra - How would i complete these problems? 1. (√6mn)^5 2. ^3√16x...
- Algebra - 1. √(9y - 196) + √196 = √49 My work: I squared all 3...
- Algebra - 1. Simplify the expression: 4√18+5√32 A.45√2 B.32&#...
- math grade 11 - i need help with this quretsion ; i don't know if im right, and ...
- math grade 11 - i need help with this quretsion ; i don't know if im right, and ...
- math - If x is greater than or equal to 100, then √x+16 (the whole thing ...
- math - If x is greater than or equal to 100, then √x+16 (the whole thing ...
- maths - I will be thankfull to you if you help me to solve the below problem: 6...

More Related Questions