Question

(sqrt 3x-2) +3=4x ?
Can someone help me with this question ?

Answer 1

like a first add to the both sides minus 3 and in the second step square both sides to elimine the squarroot

ok ?

Answer 2

sqrt(3x-2) +3 = 4x

this is correct wrote ?

Answer 3

yes

Answer 4

so can you calculi how i have wrote it above step by step ?

Answer 5

comen this is easy

Answer 6

courage

Answer 7

than you add to the both sides minus 3 what will get ?

Answer 8

courage i will help you but you need to cooperate anything

Answer 9

sqrt(3x-2) +3 = 4x / + (-3)

sqrt(3x-2) +3 -3 = 4x -3

do you can continue it ?

Answer 10

yes

Answer 11

then you sqrt both sides by 2 ?

Answer 12

yes

Answer 13

you have got the result ?

Answer 14

I got stuck after sqrting it by 2

Answer 15

why ? please write the calculi here

Answer 16

(sqrt3x-2)^2 = (4x-3)^2
3x-2 =4x-3 ?

Answer 17

the left side is right but the right side not is

you dont squared the (4x-3) ,why ?

Answer 18

how do i do that?

Answer 19

(4x-3)^2 =(4x-3)(4x-3)

yes ?

Answer 20

ohh okay i get it now

Answer 21

can you get the right result now sure ?

Answer 22

let me try hahah

Answer 23

do i add the right side together ?

Answer 24

no there is (4x-3) time (4x-3)

Answer 25

okay

Answer 26

okay what ?

Answer 27

you dont like writing the calculi here ?

Answer 28

3x-2=16x^2-6x+9

Answer 29

is that correct ?

Answer 30

not is correct the right side

Answer 31

it's supposed to be 8x^2 ?

Answer 32

so (4x-3)*(4x-3)= 4x*4x -3*4x -3*4x +(-3)*(-3) = ?

Answer 33

do you see why your calculi not is right ?

Answer 34

so 4x*4x = 16x^2 is correct

so than continue

-3*4x =-12x and -3*4x=-12x so -12x -12x = -24x

yes ?

and (-3)*(-3) = +9

than now do you see where not is correct your calculi ?

Answer 35

ohhhh I understand now

Answer 36

than do you can finish it now easy ?

Answer 37

0=16x^2-9x-7 ?

Answer 38

than

3x-2=16x^2 -24x +9

yes ?

Answer 39

how you get -9x and -7 ?

Answer 40

16x^2 - 24x + 9 -3x-2

Answer 41

why -2 ?

Answer 42

so the other side can equal to 0

Answer 43

but the -2 not is right

Answer 44

because on the left side there are 3x-2 so than thiis on the right side will be -3x+2

yes ?

Answer 45

ahhhh okay

Answer 46

so instead of 7 it will be 11 ?

Answer 47

yes and the term of x how will be ?

Answer 48

first please write it correct the quadratic what you need to get

Answer 49

so 16x^2 and how you continue it ?

Answer 50

I don't know haha

Answer 51

so there are -24x-3x

yes ?

Answer 52

yes

Answer 53

than how will be the resulted quadratic correct ?

Answer 54

you dont like continue it ?

Answer 55

sorry I was going over my problem

Answer 56

0=16^2-21x+11

Answer 57

ok so than how will be ?

Answer 58

there are -24x-3x

Answer 59

which is 21x

Answer 60

-24-3 why is it 21 ?

Answer 61

ohh sorry it's 27 right ? because of the - sign

Answer 62

I'm sorry I'm stupid in math.

Answer 63

so than how will be the quadratic correct ? and you need to solve it ?

Answer 64

(4x-3)(x-1)

Answer 65

no begin it with 16x^2

Answer 66

16x^2 -27x+11 is this what your talking about ?

Answer 67

yes

than this quadratic you need to solve it ,yes ?

Answer 68

that would be the answer ?

Answer 69

i dont know

do you know how to yolve a quadratic ?

Answer 70

Yes

Answer 71

so than you need to solve it

how ?

i think you need to us the discriminant method

Answer 72

because you not can factoriz it ,yes ?

Answer 73

yes this is right but in case of your exercise how will be

first you need to calculi the roots of quadratic

Answer 74

I don't know ?

Answer 75

us the discriminant method

do you know it ?

D=b^2 -4ac

Answer 76

and x1,2 = ?

Answer 77

No I haven't learn it

Answer 78

so than i think that you dont write correct your exersice above

how is it in your book ?

Answer 79

I checked it's correct

Answer 80

I was saying that I haven't learned about the discriminant method

Answer 81

but this qudratic you can solve it using this method

Answer 82

ohh but I don't know how to use that method.

Answer 83

sorry but than i think that you need to learn it for you can solve this exersice

Answer 84

okay

Answer 85

good luck

bye