how smart are you?

[The_Ginger_spoon]

Expand and simplify: (x + 2)(x + 3)

first person to get it correct wins

 

[FloRolf]

x²+6+5x

[zxcvbnmmssdh]

x^2+5x+6

[DrunkAssassin]

X^2 + 6 + 5X

[kuzimins]

x²+5x+6=0

x₁=-2

x₂=-3

[tS_kStin]

x^2+5x+6

[TheNinjaNextDor]

Did we just do your homework?

[The_Ginger_spoon]

yep

 

[FloRolf]

yep

 

lol.

Whatever, i'm doing maths right now anyway

[DrunkAssassin]

yep

 

If this is your homework, then i wish i had homework like yours. My homework is like that except with Squares/square roots and fractions and all this BS which i swear won't help me in life.

[The_Ginger_spoon]

is a possible maths gcse grade C (i am a level 7b) good if you are in y8?

 

[FloRolf]

If this is your homework, then i wish i had homework like yours. My homework is like that except with Squares/square roots and fractions and all this BS which i swear won't help me in life.

Cool, i have one for you then.

k(x)=sqrt(r²-(x-5.5)²)

k'(4)=0.75

Solve to r.

Edit: yay, after spending the whole day yesterday with this shit, i know just solved it! \o/ (r=2.5 btw)

[DyGr00339]

(x + 2)(x + 3)

(x + 2) (x + 3)

( x + 2 )( x + 3 )

(  x + 2  )(  x + 3  )

 

Expanded enough?

[Calavera]

1

[DrunkAssassin]

Cool, i have one for you then.

k(x)=sqrt(r²-(x-5.5)²)

k'(4)=0.75

Solve to r.

People like you who make maths questions like this deserve to burn in hell.

[Chaosbadger]

Does anyone want to have a go at mine?

 

[ir(bipy)₃]Cl₃ where bipy = 2,2'-bipyridine

Draw all the possilbe isomers of the complex ions

Calcualte the charge of the metal and the dⁿ configuration

Draw a diagram showing the d oribtal occupancy and, where high and low spin cases are possible, predict which will be favoured considering the spectrochemical series

[The_Ginger_spoon]

what is 5+7

 

[FloRolf]

People like you who make maths questions like this deserve to burn in hell.

that wasnt me, its coming straight from a test example

[erty176]

Would you like to try mine? evaluate the integral from -1 to 5 of (1+x)(2x+x^2)^3 dx.

[Thunderjolt]

Would you like to try mine? evaluate the integral from -1 to 5 of (1+x)(2x+x^2)^3 dx.

I would but I'm doing statistics right now #Procrastination

[erty176]

Ohh I remember statistics.... fun times...

[chicksoup]

dude, the people on this forum are smart enough to pass a 6th Grade math example we work with PCs all day 

[FloRolf]

Would you like to try mine? evaluate the integral from -1 to 5 of (1+x)(2x+x^2)^3 dx.

If that is your graph:

then this makes no sense.

[erty176]

Hint: You have to use substitution method

[Tam3n]

Cool, i have one for you then.

k(x)=sqrt(r²-(x-5.5)²)

k'(4)=0.75

Solve to r.

 

Hmm I'll try to do this here to refresh derivation...

 

k'(x) = (0.5(r²-(x-5.5)²)^-0.5)2(x-5.5) = (x-5.5)/(r²-(x-5.5)²)^0.5

k'(4) = 0.75 = -1.5/(r²-2.25)^0.5

0.75² = 2.25/(r²-2.25)

r = ((2.25/0.75²)+2.25)^0.5 = sqrt(6,25) = 2,5

 

Maybe...