bewellplus.gsu.edu
thiaaleGDpku3m thiaaleGDpku3m
  • 01-12-2016
  • Mathematics
Answered

solve |x + 7| = 12

A{-19, -5}

B{-5,19}

C{-19,5}

d.{5,19}

Verified Answer :

apologiabiology
apologiabiology apologiabiology
  • 01-12-2016

for
|a|=b
assume
a=b and a=-b

|x+7|=12

assume
x+7=12 and x+7=-12
minus 7 both sides
x=5 and x=-19

C is answer

Answer Link
wizard123
wizard123 wizard123
  • 01-12-2016

When solving absolute value equations, you must account for both the positive and negative cases.

x+7 = 12       AND        x+7 = -12
x = 5                               x = -19

Answer Link

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