Question

Please help me simplify this expression:

Answer 1

I'll get you started
\[\Large 8y^2 - \left[-8y-(-10y^2+9y)\right] - \left[6+(-11y-6)\right]\]
\[\Large 8y^2 - \left[-8y-(-10y^2+9y)\right] - \left[6-11y-6\right]\]
\[\Large 8y^2 - \left[-8y-(-10y^2)-9y\right] - \left[6-11y-6\right]\]
\[\Large 8y^2 - \left[-8y+10y^2-9y\right] - \left[6-11y-6\right]\]
\[\Large 8y^2 - \left[10y^2-17y\right] - \left[-11y\right]\]
and I'll let you take over from here

Answer 2

Thank you very much. I'll show you what I get

Answer 3

ok sounds good

Answer 4

\[-2y^2-28y\] ?

Answer 5

hopefully you have this somewhere in your steps

\[\Large 8y^2 - \left[10y^2-17y\right] - \left[-11y\right]\]
\[\Large 8y^2 -10y^2-(-17y) - (-11y)\]
\[\Large 8y^2 -10y^2+17y +11y\]

Answer 6

the negative out front of the first square brackets make the -17y turn into +17y

Answer 7

try again

Answer 8

Okay will do

Answer 9

\[-2y^2+28y\]

Answer 10

better

Answer 11

Yay, thank you!

Answer 12

you're welcome

Answer 13

@jim_thompson5910 could you check another answer for me

Answer 14

sure

Answer 15

I got \[5a^2-10a-4\] I don't think I got it right

Answer 16

@jim_thompson5910

Answer 17

unfortunately, it is incorrect

Answer 18

I figured...

Answer 19

can you help me solve it?

Answer 20

\[\Large -4a^2 - [-4a - (-9a^2 + 2a)] - [7 + (4a-7)]\]
\[\Large -4a^2 - [-4a + 9a^2 - 2a] - [7 + 4a-7]\]
\[\Large -4a^2 - [9a^2 - 6a] - [4a]\]
\[\Large -4a^2 - 9a^2 + 6a - 4a\]
I'm sure you see how to finish up

Answer 21

\[-13a^2+2a\]

Answer 22

correct

Answer 23

You're a lifesaver!

Answer 24

so somewhere along the line, you're losing a negative sign I think

Answer 25

glad to be of help