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Posted by on Saturday, April 21, 2012 at 8:25pm.

use the binomial theorem to expand the binomial

(x-5)^6

  • Plz help!!! algebra - , Saturday, April 21, 2012 at 8:32pm

    row 6 is

    1 6 15 20 15 6 1

    1 x^6 -5^0 = x^6
    6 x^5(-5)^1 = -30x^5
    15 x^4(-5)^2 = 15*25 x^4 = 375 x^4
    20 x^3 (-5)^3 = 20*-125 x^3 = -2500 x^3
    etc then add them up

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