Question

sqrt of 3x+10 = sqrt of x+11 minus 1

Answer 1

\[\sqrt{3x+10}=\sqrt{x+11}-1\]
square both side then
we will have 3x+10=x+11-2sqrt(x+11)+1
then we can square it again and we will get a simple equation to solve

Answer 2

Haha maybe that's what i did wrong in the other one.

Answer 3

I don't understand what he said I got the 3x + 10 on the left side but the right side is confusing

Answer 4

Help meeee @Jhannybean lol

Answer 5

i mean (a-b)^2 = a^2-2ab+b^2

Answer 6

9x^2+100+60x=x^2+121+11x-2x-22+1

i think this equation will come after sq..2times

Answer 7

@nirmalnema
LHS = correct
RHS = not correct

Answer 8

okk..... @Jack1

Answer 9

RHS = x^2 +188 +28x - (48(sqrt(x+11))) - (4x(sqrt(x+11))

Answer 10

3x+10−−−−−−√=x+11−−−−−√−1

Answer 11

no, should be neg 2(sqrt x+11)

Answer 12

yaa...its -2(sqrt x+11)

Answer 13

sqrt of x+11 minus 1 SQUARED
= x + 12 - 2(sqrt(x+11))

Answer 14

its a negative 1
( a-b )(a -b )
=a^2 -2ab +b^2

Answer 15

so
3x + 10 = x + 12 - 2(sqrt(x+11))
2x -2 = - 2(sqrt(x+11))
1-x = sqrt x+11

Answer 16

x^2 - 2x +1 = x+11

Answer 17

x^2 -3x -10 = 0

quadratic rule
x = something or x = something else

Answer 18

... -2 and 5...?
does that work?

Answer 19

hahahaha!
how did we get different answers again?

Answer 20

the third line of Jhannybean is wrong it should be (x+11) not (x+1)

Answer 21

@Jack1 if u put 5 in the given equation u get 5=3

Answer 22

ohh, yeah that's what i meant @johnkwongkwong thanks

Answer 23

so if its 5, sub back into original eqn:
sqrt of 3x+10 = sqrt of x+11 minus 1
sqrt 15 = sqrt 16 -1

doesn't work

but if x = -2
sub back into original eqn:
sqrt of 3x+10 = sqrt of x+11 minus 1
sqrt -4 = sqrt 9 -1

does work
so x = -2

Answer 24

@nirmalnema
that's the thing hey,

x^2 -3x -10 = 0

and there are 2 x values that satisfy this equation

but both of those x values won't necessarily satisfy our original equation, so we need to test the answers to find our desired result

Answer 25

@Jhannybean
ans = x = -2

Answer 26

no... not tryin to be a tool, sorry

Answer 27

im just kidding, :P frustrated that i did it wrong, hahaha.

Answer 28

catch some z's, qt, you'll be runnin circles round everyone again tomorrow

Answer 29

lol nah, i need to take a break from OS for a couple days probably...it's so addicting. :|

Answer 30

hmm... maybe socialize with real people a little tomorrow too... ;)
good for the soul

Answer 31

lol been out all day, actually.

Answer 32

that's ok then

slaters

Answer 33

Gnight though