Modulus equations

WARNING: CARE MUST BE TAKEN WHEN SOLVING MOD EQUATIONS.

There are several methods but you must know when you can use them. Hopefully these videos will show you.

Type 1 : Mod on one side of the ‘=’ and some x’s on the other side not in a mod.

Example: Solve

  1. |x+1| = -2x - 5

Type 2: Mod on one side of the ‘=’ and a constant (just a number) on the other side

Example: Solve

  1. |x-2|=3

Note: There are 3 methods of solution

Type 3: Mod on both sides of the ‘=’ sign

Example: Solve

  1. |3x+9|=|2x+1|

Note: There are 2 methods of solution




2018-08-07T12:13:11+00:00
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