Question

http://prntscr.com/20ny3b

Answer 1

Have you considered raising both sides to the 3rd power?

Answer 2

i did then tried simplifying and got stuck

Answer 3

What did you get after the 3rd power? Please show your best work.

Answer 4

(-147+8)=(36+27x)

Answer 5

?? How did you get that?

\(\left[(-7x + 2)^{1/3}\right]^{3} = (-7x + 2)^{(1/3)\cdot 3} = (-7x + 2) ^{1} = -7x + 2\)

You should remember that what you have done is not valid.

(1 + 2)^3 is absolutely NOT 1^3 + 2^3. Never do that again.

Answer 6

i cube rooted the numbers. as u can see im very confused. can u help me reach a final answer lol

Answer 7

i mean cubed not cube rooted

Answer 8

The whole point of the CUBE (3) was to remove the CUBE ROOT (1/3). Just remove it.

\((-7x+2)^{1/3} = (4+3x)^{1/3}\)

CUBE both sides

\(-7x+2 = 4+3x\)

Done! It's not any harder than that.

Answer 9

Not valid. Don't do that.

\((7x+2)^{3}=(7x)^{3}+3(7x)^{2}(2)+3(7x)2^{2}+2^{3}≠(7x)^{3}+2^{3}\).

You're missing half the terms!!

Answer 10

thans for explaining but i dont see the final answer in ym answer choices

http://prntscr.com/20ny3b

Answer 11

-7x + 2 = 4 + 3x

Solve for x. i would suggest starting by adding 7x to both sides. Please demonstrate.

Answer 12

i got 2=4+10x

Answer 13

Perfect. What's next?

Answer 14

divide both sides by 2?

Answer 15

That's what I would do. A couple more things after that.

Answer 16

2+5x then what lol?

Answer 17

Where did the left-hand side of the equation go?

1 = 2+5x

Two more things to do.

Answer 18

subtract 1 from both sides

Answer 19

Don't you dare. You want to isolate the x. Why would you move the 1 over next to the x?

Subtract 2 and you'll make a difference.

Answer 20

-1=3x

Answer 21

How did 5 turn into 3?

1 = 2 + 5x

Subtract 2

1 - 2 = 2 + 5x - 2

-1 = 2 - 2 + 5x

-1 = 0 + 5x

-1 = 5x

You cannot subtract 2 from 5x. These are not "like" terms!

Answer 22

o ok so the final answe wud be -1/5 ?

Answer 23

Not quite. It's still an equation.

x = -1/5

Now THAT looks like a final answer.

Answer 24

o ok thank you so much :)