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1. 4. 6. 4. 1.
(a-5)^4 =
= 1(a)^4 - 4(a)^3(5) - 6(a)^2(5^2) -4(a)(5^3) -1(5^4)
= a^4 - 20a^3 - 150a^2 - 500a - 625
2. untuk faktor aljbar ^3 koofisien 1. 3. 3. 1.
(2x + y)^3 =
= 1(2x^3) + 3(2x^2)(y) + 3(2x)(y)^2 + 1(y)^3
= 2x^3 + 6x^2y + 6xy^2 + y^3
smoga tidak keliru y. mohon ditelaah kembali. :-)