#1420 · Algebra · Polynomials

Expansion of a trinomial

Find the expansion of $(1 + 2 x - x^{2})^{4}$ .

~12 minAnswer checked instantlyBinomial TheoremMultinomial expansion

H. S. Hall & S. R. Knight, Higher Algebra (1891) · Ch. XIII. Binomial Theorem: Positive Integral Index, Examples XIII.b, No. 10

Stuck? A gentle nudge

Something off?

Workspace

Your answer

Loading the math keyboard…

Type naturally — sqrt, pi, / and ^ become notation. Any equivalent form is accepted. Press Enter to check.

Checked against the answer in H. S. Hall & S. R. Knight, Higher Algebra (1891).