Wednesday

July 23, 2014

July 23, 2014

Posted by **John** on Tuesday, October 5, 2010 at 5:32pm.

- Algebra -
**Henry**, Tuesday, October 5, 2010 at 10:01pm[4x - 4] = 8x + 16.

There are 2 possible solutions:

4x - 4 = +- (8x + 16),

First Eq:

4x - 4 = +(8x + 16),

4x - 8x = 16 + 4,

-4x = 20,

x = -5.

2nd Eq:

4x - 4 = -(8x + 16),

4x - 4 = -8x - 16,

4x + 8x = -16 + 4,

12x = -12,

x = -1.

Check 1st Eq:

[4*-5 -4] = 8*-5 + 16,

[-24] = -24.

The above statement is NOT true:

[-24] = +24.

Therefore, -5 is NOT a solution.

Check 2nd Eq:

[4*-1 - 4] = 8*-1 + 16,

[-8] = 8. TRUE.

Solution:x = -1.

**Related Questions**

Math - How do you do this? I4x-4I=8x+16 (The 2 "I" are absolute signs)

algebra 2 - in absolute value i kno that a negative number then turns to ...

algebra 2 - evaluate:-[a-3b],if a= -2 and b= 6 -[-2-18] -[20] 20 correct? these ...

question - I the question "List all the numbers that have an absolut value of 12...

algebra 1 - Inequality 3 | 2x-2 | +16<58 •simplify as much as possible ...

Algebra - Right now we are learning about absolute value inequalities. I have to...

Math - Can someone please help me with an algebra problem? -|4-8b|=12 I really ...

algebra2 - evaluate h(-2/3) if h(x) = [[x-2]] (-2/3)-2 = -2.666666667 is this ...

Factoring Trinomials - How do you determine the signs? I know these wouldn't ...

Calculus (pleas help!!!) - Find the absolute maximum and absolute minimum ...