WEEK 13. solving absolute value equations

|-2x+4|=2

 

ForĀ solving absolute value questions you should first solve it without any change and then multiply -1 to left side and solve it again.

-2x+4=2

-2x=-2

x=1

-1(-2x+4)=2

+2x+4=2

2x=-2

x=-1

so the equation has two answers 1 and -1.

 

 

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