Question

combine the expressions

Answer 1

\[8x+\sqrt{1}-\sqrt{9y}-\sqrt{9x^2} \space and \space got \space 5x-3\sqrt{y+1}\]

Answer 2

i'm not sure about the - s and +s..

Answer 3

where's -s and +s

Answer 4

from my answer.

Answer 5

i dont see -s + s in your answer

Answer 6

nonono.. never mind

Answer 7

anyway...you had one minor mistake \[\sqrt y + \sqrt 1 \ne \sqrt{y+1}\]

Answer 8

it's never that way

Answer 9

think of sqrt y as x and sqrt 1 as z

you cant combine x and z

Answer 10

ah ok.. what i was saying about the - sign and +sign i wasnt sure

Answer 11

also... \[\sqrt 1 = 1\]