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Expand (x  2y)4.
A: x4 + 8x3y + 24x2y2 + 32xy3 + 16y4
B: x4  8x3y + 24x2y2  32xy3 + 16y4
C: x4  8x3y + 24x2y2  34xy3 + 16y4
D: x4  8x3y + 28x2y2  32xy3 + 16y4
 one year ago
 one year ago
Expand (x  2y)4. A: x4 + 8x3y + 24x2y2 + 32xy3 + 16y4 B: x4  8x3y + 24x2y2  32xy3 + 16y4 C: x4  8x3y + 24x2y2  34xy3 + 16y4 D: x4  8x3y + 28x2y2  32xy3 + 16y4
 one year ago
 one year ago

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VoidusBest ResponseYou've already chosen the best response.0
aren't they all the same?
 one year ago

anthony~Best ResponseYou've already chosen the best response.0
i think its x^4  8x^3y + 24x^2y^2  32xy^3 + 16y^4 (B)
 one year ago

amistre64Best ResponseYou've already chosen the best response.1
they only differ in sign changes
 one year ago

VoidusBest ResponseYou've already chosen the best response.0
@amistre64 actually that and the coefficients.
 one year ago

amistre64Best ResponseYou've already chosen the best response.1
...28 and 34 .... sneaky
 one year ago

anthony~Best ResponseYou've already chosen the best response.0
the numbers are different too. the numbers, signs and all that. they're not the same. none of them.
 one year ago

amistre64Best ResponseYou've already chosen the best response.1
1 4 6 4 1 pascal row x x x x 1 power down 1 2y 2y 2y 2y power up 
 one year ago

anthony~Best ResponseYou've already chosen the best response.0
x^4  8x^3y + 24x^2y^2  32xy^3 + 16y^4??
 one year ago

amistre64Best ResponseYou've already chosen the best response.1
http://www.wolframalpha.com/input/?i=expand+%28x++2y%29%5E4 but yeah, B is good
 one year ago
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