bry856
  • bry856
simplifying algebraic expressions?
Algebra
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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bry856
  • bry856
1 Attachment
bry856
  • bry856
-a^2 - [-4a - (-15a^2 - 9a) ] - [1+(12a-1) ]
bry856
  • bry856
i know how to do problems like 7b^2-b+3b+6-3b^2+5+2b^2+7b but i get confused when parentheses and brackets are added

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anonymous
  • anonymous
ok
Nnesha
  • Nnesha
PEMDAS rule \[\large\rm -a^2 - [-4a - (-15a^2 - 9a) ] - [\color{reD}{1+(12a-1) }]\] first of solve red part there is a plus sign so u can remove that parentheses and then combine like terms \[\large\rm -a^2 - [-4a - (-15a^2 - 9a) ] - [\color{reD}{1+12a-1 }]\]
anonymous
  • anonymous
do you want the answer because i have the answer and she is correct
bry856
  • bry856
yes please haha and thank you^^
anonymous
  • anonymous
97a^2-12a
bry856
  • bry856
Nnesha, do you do that for both sides
Nnesha
  • Nnesha
new to open study? we are not allowed to give DIRECT Answer :-) http://openstudy.com/code-of-conduct
bry856
  • bry856
dang i typed that in and it said it was wrong
anonymous
  • anonymous
ik but i cant explain it it just clicks then i skip a couple steps
anonymous
  • anonymous
^ is it is squared by 2
Nnesha
  • Nnesha
both sides ? if you mean other bracket then first you have to distribute parentheses by negative one \[\large\rm -a^2 - [-4a\color{blue}{ - (-15a^2 - 9a)} ] - [\color{reD}{1+12a-1 }]\] -1(-15a^2 -9a) and then combine like terms so -1(-15a^2 -9a ) = ??
anonymous
  • anonymous
carp i thought i put a negative 97 its post to be -97a^2-12a
Nnesha
  • Nnesha
do you know how to distribute ?
bry856
  • bry856
kinda
Nnesha
  • Nnesha
alright distribute = multiply everything which is inside the parentheses by outside term so -1(-15a^2 -9a) multiply -1 times -15a^2 = ?? -1 times -9a = ??
Nnesha
  • Nnesha
and btw that answer is not correct :( js

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