How do you solve and graph #|2x+5| <= 15#?

1 Answer
Alan P.
Jun 23, 2017

#color(red)(-10 <= x <=5)#
enter image source here

Explanation:

Note that
#{: ("if "2x+5 <0,color(white)("xxx"),"if " 2x+5 >=0), ("then " abs(2x+5) <= 15,,"then "abs(2x+5) <=15), (rarr -2x-5 <=15,,rarr2x+5 <=15), (rarr -2x <= 20,,rarr2x <= 10), (rarr x >= -10,,rarr x<=5) :}#

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