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so i entered -2+1^{2}   into the calucator and the solution is -1, which led me to get an equation I was solving wrong.

 

Then i plugged in the parentheses, (-2+1)^{2}  and the solution becomes a positive 1. Why is that?

 Mar 30, 2023
 #1
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Are you familiar with the order guidelines used complete calculations of equations called PEDMAS ? 
parentheses  first

exponents    next 

division/multiplication next 

addition/subtraction next

  using these rules 

-2 + 1^2       do the exponent firist     -2 +1     now do the addition   = -1 

(-2+1)^2      do the parentheses first   -1 ^2    now do the exponent   = 1 

 Mar 31, 2023
edited by ElectricPavlov  Mar 31, 2023
 #2
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thanks man

Guest Apr 4, 2023

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