Jbruce227
Jbruce227 Jbruce227
  • 25-08-2018
  • Mathematics
contestada


[tex]7 - 8 \div 4( {3}^{2} - 1)[/tex]

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gmany
gmany gmany
  • 02-09-2018

Use PEMDAS

P Parentheses first

E Exponents (ie Powers and Square Roots, etc.)

MD Multiplication and Division (left-to-right)

AS Addition and Subtraction (left-to-right)

[tex] 7-8\div4\cdot(3^2-1)=7-2\cdot(9-1)=7-2\cdot8=7-16=-9 [/tex]

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