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OpenStudy (anonymous):
Expand (3 - x)5.
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OpenStudy (anonymous):
use the binomial theorem, or pascal's triangle
OpenStudy (anonymous):
15x - 5 = 0 15x = 5 x= 3
OpenStudy (anonymous):
243 - 405x + 270x2 - 90x3 + 15x4 - x5 233 - 405x + 270x2 - 90x3 + 15x4 - x5 223 - 405x + 270x2 - 90x3 + 15x4 - x5 213 - 405x + 270x2 - 90x3 + 15x4 - x5
OpenStudy (anonymous):
these are the choices
OpenStudy (anonymous):
243-405*x+270*x^2-90*x^3+15*x^4-x^5
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OpenStudy (anonymous):
it a :)
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