Answer to Question #346437 in Algebra for bookaddict

Question #346437

Find the first 3 terms, in ascending powers of π‘₯, of the binomial expansion of (2βˆ’π‘₯)4 and simplify each term.


1
Expert's answer
2022-06-02T08:54:21-0400
(a+b)4=(40)a4+(41)a3b+(42)a2b2(a+b)^4=\dbinom{4}{0}a^4+\dbinom{4}{1}a^3b+\dbinom{4}{2}a^2b^2+(43)ab3+(44)b4+\dbinom{4}{3}ab^3+\dbinom{4}{4}b^4=a4+4a3b+6a2b2+4ab3+b4=a^4+4a^3b+6a^2b^2+4ab^3+b^4





(2βˆ’x)4=16βˆ’32x+24x2βˆ’8x3+x4(2-x)^4=16-32x+24x^2-8x^3+x^4

16,βˆ’32x,24x216, -32x, 24x^2


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