Will give medal. c:
Solve for x: |2x + 6| − 4 = 20
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OpenStudy (anonymous):
start by isolating the absolute value
OpenStudy (aum):
|2x + 6| − 4 = 20
To solve for x, isolate x.
Add 4 to both sides. What do you get?
OpenStudy (anonymous):
|2x+6| - 4= 20
+4 +4
|2x+6|= 24 ?
OpenStudy (anonymous):
once you've done that make your two different problems and solve for x for each. Your first one will be 2x + 6 = 24 and your second will be 2x + 6 = -24
OpenStudy (aum):
Yes.
Use this fact: If |A| = B, it means A = B, A = -B
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OpenStudy (anonymous):
okay I'll write that down
OpenStudy (anonymous):
once you solve for x for each, that will give you your x values
OpenStudy (aum):
If |A| = B, it means A = B, A = -B
Therefore, |2x+6|= 24 means
2x+6 = 24 or 2x+6 = -24
Solve each equation separately
OpenStudy (anonymous):
2x+6= 24
-6 -6
2x= 18
2x/2 = 18/2
x= 9
2x+6= -24
-6 -6
2x= -30
2x/2= -30/2
x= -15
did i do this right?
OpenStudy (aum):
Yes!
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