Question

simplifying algebraic expressions?

Answer 1

-a^2 - [-4a - (-15a^2 - 9a) ] - [1+(12a-1) ]

Answer 2

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

Answer 3

ok

Answer 4

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
\[\large\rm -a^2 - [-4a - (-15a^2 - 9a) ] - [\color{reD}{1+12a-1 }]\]

Answer 5

do you want the answer because i have the answer and she is correct

Answer 6

yes please haha and thank you^^

Answer 7

97a^2-12a

Answer 8

Nnesha, do you do that for both sides

Answer 9

new to open study?
we are not allowed to give DIRECT Answer :-)

http://openstudy.com/code-of-conduct

Answer 10

dang i typed that in and it said it was wrong

Answer 11

ik but i cant explain it it just clicks then i skip a couple steps

Answer 12

^ is it is squared by 2

Answer 13

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 ) = ??

Answer 14

carp i thought i put a negative 97 its post to be -97a^2-12a

Answer 15

do you know how to distribute ?

Answer 16

kinda

Answer 17

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 = ??

Answer 18

and btw that answer is not correct :(
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