Question

Solve 5(^x^2 - ^3x) = 1/25

a. 1,2
b. 1,4
c. 2,2
d. 2,4
e. 1,3
f. 2,5

Answer 1

do u mean \[5(\sqrt{x^2}-\sqrt{3x}) = \frac{ 1 }{ 25 }\] ?

Answer 2

Nope. Everything is correct except the square root before both of them.

Answer 3

do you mean
\[5^{x-\sqrt{3x}} = 5^{-2}\]

Answer 4

5^-2 is the same as 1/25

Answer 5

maybe u could distribute the 5 to everything in the parentheses and then subtract 1/25 to bring it to the left side so the whole equation could equal zero..then u could use the quadratic equation...I feel like there's an easier way of doing this but that's the only thing I could come up w/.

Answer 6

Basically you fill in for x with the two choices. (That's what my teacher said) I tried it and got C as my answer. She told me it was incorrect, and to try again.

Answer 7

For example: 5(^x^2 - ^3x) = 1/25
5(^2^2 - ^3*2) = 1/25
5(^4 - ^6) = 1/24
5^(-2) = 1/24
0.04 = 1/24
1/24 = 0.04

She said it was incorrect, but it's obviously right.

Answer 8

Ignore the 1/24. I meant 1/25.

Answer 9

what the heck is ^x^2?
there's no such notation.

Answer 10

there's something wrong w/ ur teacher b/c none of the answer choices give u 1/25

Answer 11

Jennychan12: It's the way my teacher taught me to write those things.
Solane12: She said to put 1/25 as a percent - which would be 0.04. Divide 1 by 25 and you get 0.04.

Answer 12

and i'm not sure if u take advanced math but I haven't seen anything that looks like ^x^2 before

Answer 13

i agree with @Solane12

Answer 14

I put that as another way to write it (because that's how I learned it).
It's like this:

Answer 15

Ohhh..makes sense now..i thought u were doing some weird math.. and the answer is A

Answer 16

Nope, it's just the way my teacher taught it. I'm home-schooled, and she's not the best teacher. Lol
But thank you :)

Answer 17

-_-
that's what i wrote in the beginning...

Answer 18

C is wrong because one of the choice is 0.2 and 5^.2=1.379 ..

Answer 19

@jennychan12, you really ought to learn how to use the Equation editor button for these things!

\[5^{(x^2-3x)}=1/25\]

Answer 20

Definitely not what you wrote in the beginning Jenny, but thank you Solane!

Answer 21

and No problem! :)

Answer 22

Hey, you're the one who needs help, right?

Answer 23

Life lesson: make it easy for others to help you.

Answer 24

Yeah. I understand it. I just didn't see how I got my answer incorrect before. Then Solane12 explained.

Answer 25

Life lesson #2, read more carefully who said what! Sorry jennychan12!

Answer 26

fallingforamber, what I said to jennychan12 was meant for you. My bad!