Day 68 – December 5

Algebra: Chapter 9, Lesson 3, page 411.

Equations and Absolute Value

To solve an equation of the form ${\displaystyle \left|A\right|=b}$, solve the disjunction ${\displaystyle A=b}$ OR ${\displaystyle A=-b}$. You will have 2 equations to solve with the right side of the second equation having the opposite sign of the first equation’s right side.

REMEMBER by definition, the solution of ${\displaystyle \left|A\right|\ne a}$ NEGATIVE NUMBER! So … the solution to these type of problems is the NULL SET! or the symbol ${\displaystyle \varnothing }$ !

Here is a link to examples!