|2x - 7| = 3 How would i solve this, and would there be two answers?
O Oxymoron New member Joined Jul 22, 2008 Messages 4 Jul 22, 2008 #1 |2x - 7| = 3 How would i solve this, and would there be two answers?
W wjm11 Senior Member Joined Nov 13, 2004 Messages 1,417 Jul 22, 2008 #2 |2x - 7| = 3 How would i solve this, and would there be two answers? Click to expand... Yes, there would be two answers. Turn the original equation with the absolute value into two separate equations with no absolute value: 2x-7 = 3 and 2x-7 = -3 Then just solve each equation.
|2x - 7| = 3 How would i solve this, and would there be two answers? Click to expand... Yes, there would be two answers. Turn the original equation with the absolute value into two separate equations with no absolute value: 2x-7 = 3 and 2x-7 = -3 Then just solve each equation.
tkhunny Moderator Staff member Joined Apr 12, 2005 Messages 11,339 Jul 23, 2008 #3 Oxymoron said: |2x - 7| = 3 How would i solve this, and would there be two answers? Click to expand... I recommend a careful extraction of non-absolute value problems. The extraction is based on the following observation: 1) |x| = x IF x >= 0 Example: |3| = 3 2) |x| = -x IF x < 0 Example: |-3| = -(-3) = 3 Can you see how to tear it apart with this idea?
Oxymoron said: |2x - 7| = 3 How would i solve this, and would there be two answers? Click to expand... I recommend a careful extraction of non-absolute value problems. The extraction is based on the following observation: 1) |x| = x IF x >= 0 Example: |3| = 3 2) |x| = -x IF x < 0 Example: |-3| = -(-3) = 3 Can you see how to tear it apart with this idea?