Question/Quote of The Day

[yogurtman250]

Math!? NO! NOOOo!

Because I'm an unfunny bastard, here's a question just for you.

If (3x^5 - 2y^5 + 27) = (2y^8 - x + 63), then what's the value of x? Good luck!

 

[pandascepter]

The fabled academic question is finally here.

QoTD 219: 3x-71 =-2(5x+1). Can you find the value of x?

69
nice

 

[Mangamoz]

The fabled academic question is finally here.

QoTD 219: 3x-71 =-2(5x+1). Can you find the value of x?

 

[pandascepter]

Spoiler: ...sigh....

3x - 71 = -2(5x + 1) / distribute the right side
3x - 71 = -10x - 2 / add 2 to both sides to eliminate the -2 on the right
3x - 69 = -10x / subtract 3x from both sides to get the variable isolated on one side of the equation
-69 = -13x / multiply both sides by -1 to eliminate the negative signs
69 = 13x / divide both sides by 13 to remove the coefficient of the variable
69/13 = x

Yes. Math is fun. Posting the steps sucks, so I'm only doing a single intermediate step.

Spoiler

3x + 10x = -2 + 71
x=69/13 OR 5 4/13
______
OR x = 5.307962 repeating.

I miss doing random math.

wow boomer is actually smart...
I feel dum now.
I love math, I just hate algebra. Mf why should I imagine a nonexistent number

 

[tilefish]

I love math, I just hate algebra. Mf why should I imagine a nonexistent number

Just wait until you need to use imaginary numbers in equations. (√-1)

 

[pandascepter]

Just wait until you need to use imaginary numbers in equations. (√-1)

:sakuded:

 

[Cool.Ice]

The fabled academic question is finally here.

QoTD 219: 3x-71 =-2(5x+1). Can you find the value of x?

69/13

 

[Cool.Ice]

(3x^5 - 2y^5 + 27) = (2y^8 - x + 63)

It's a quintic equation for terms of x, and hence according to Abel-Ruffini Theorem, we can't Isolate terms of X. Until...

See, the equation of x is in the form of
x^5 + x - a
This is the Bring-Jerrard form, and in this form, we can apply Bring radical to kinda find the answer, where
u = BR(-3^(1/4)*C) = 0

we can manipulate x to be this form, to find

x = 3^(-1/4) * BR(-3^1/4 * (2y^8 + 2y^5 + 36))

Yeah, it looks ugly, but we can do Taylor Expansion of it, which will look like a polynomial
x = 1.62 + 0.02y^5 + 0.02y^8 and so on

 

[5hijima]

The fabled academic question is finally here.

QoTD 219: 3x-71 =-2(5x+1). Can you find the value of x?

3x-71 = -10x-2
-71=-13x-2
-69=-13x
-69/13=-x
69/13=x

there ya go

can i have another i dont want to lose my skill because i didnt pick anything particularly nerdful for my college stuffs

 

[Taogeru]

The fabled academic question is finally here.

QoTD 219: 3x-71 =-2(5x+1). Can you find the value of x?

Nothing, because my X is an Asshole

 

[BakedBanana]

can i have another i dont want to lose my skill because i didnt pick anything particularly nerdful for my college stuffs

Okay, here you go:
https://en.wikipedia.org/wiki/List_of_unsolved_problems_in_mathematics