Question

Help, please?

Answer 1

@campbell_st @ganeshie8 @.Sam. ?

Answer 2

for 6 :

start by squaring both sides

Answer 3

\(\large \sqrt{2x+3} = \sqrt{6x-1} \)

square both sides

\(\large (\sqrt{2x+3})^2 = (\sqrt{6x-1})^2 \)

Answer 4

any ideas what we can do next ?

Answer 5

@ganeshie8 simplify?

Answer 6

yes :), here is what we can do :- we can cancel square and squareroot.

Answer 7

that gives -

\(\large 2x+3 = 6x-1 \)

Answer 8

you can solve x now ?

Answer 9

@ganeshie8 is it C???

Answer 10

No

Answer 11

D: so sorry, I'm horrible at this~ @ganeshie8

Answer 12

\(\large 2x+3 = 6x-1 \)
-2x -2x

\(\large 3 = 4x-1\)
+1 +1

\(\large 4 = 4x\)

Answer 13

its okay :) you wil get better as u do more problems :)


see if u can find x now ?

Answer 14

@ganeshie8 1?

Answer 15

Yes ! good work!

Answer 16

@ganeshie8 ahh, lifesaver!! :) can you help me with the next one too?

Answer 17

ah ty :) let me see

Answer 18

@ganeshie8 wait, is it B?

Answer 19

same logic, start by squaring both sides..

Answer 20

you're almost there, try again :)

Answer 21

\(\large \sqrt{\frac{b^4}{25}} = 4\)

square both sides

\(\large (\sqrt{\frac{b^4}{25}})^2 = (4)^2\)

Answer 22

as usual, on left side, the square and square root cancel out

Answer 23

\(\large \frac{b^4}{25} = 4^2\)

Answer 24

\(\large b^4 = 4^2*25\)

Answer 25

\(\large b^2 = \pm 4*5\)

Answer 26

\(\large b = \pm ?\)

Answer 27

20? @ganeshie8

Answer 28

we need to take square root to get b

Answer 29

\(\large b^2 = \pm 4*5\)


\(\large b = \pm 2 \sqrt{5}\)

Answer 30

@ganeshie8 ty!! 1 more??

Answer 31

sure, post it as a new quesiton.. il see if i can help :)

Answer 32

@ganeshie8

Answer 33

easy, look at the given function

Answer 34

\(\large y = \sqrt{2x+6}\)

Answer 35

if u let y = 0,

then,

x = ?

Answer 36

0 = 2x + 6

x = -3, right ?

Answer 37

that means, x goes negative, when y goes 0. look at the graph and tell me, in which graph its like that

Answer 38

@ganeshie8 C?

Answer 39

@ganeshie8 ....

Answer 40

no, C has x value of 4, when y =0

Answer 41

try again :)

Answer 42

@ganeshie8 ooohhh C?

Answer 43

@ganeshie8

Answer 44

C is wrong

Answer 45

look at where that redline is touching he x axis... .

Answer 46

@ganeshie8 WAIT-B?

Answer 47

@ganeshie8 IS IT b???????

Answer 48

Yes its B ! good guess :)