Question

2 square root of 7x + square root of 7x - 3 square root of 7x - 7

Answer 1

is it ...
\[\LARGE 2\sqrt{7x}+\sqrt{7x}-3 +\sqrt{7x}-7\]

or

\[\LARGE 2\sqrt{7x}+\sqrt{7x-3} +\sqrt{7x-7}\] ?

Answer 2

yes to the first one

Answer 3

then I think this should help...

\[\Large a\sqrt{7x}+b\sqrt{7x}=(a+b)\sqrt{7x}\]

Answer 4

thank you

Answer 5

do you know how to do it now ?

Answer 6

i am trying to figure it out right now

Answer 7

If you can't just let me know... I'll help you ;)

Answer 8

thank you so much

Answer 9

you're welcome ;)

Answer 10

is the answer 3 square root of 7x - 7

Answer 11

?

Answer 12

\[\Large 2\sqrt{7x}+\sqrt{7x}-3+\sqrt{7x}-7=\]

\[\Large 2\sqrt{7x}+\sqrt{7x}+\sqrt{7x}-7-3=\]

\[\Large (2+1+1)\sqrt{7x}-7-3=\]

\[\Large 4\sqrt{7x}-10\]

@cassandre if you're still confused about steps I made solving it , feel free to ask ;)

Answer 13

omg, i see where the issue is, i forgot to combine the -7 with the - 3

Answer 14

thanks for helping

Answer 15

It happens don't worry ;) .. Glad to help :)