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Which of the binomials below is a factor of this trinominal? x^2-13+30

What is the standard form of -5x^2+2x^4-11+x^3+3x

Alcoa was $10.02 a share yesterday. today it is at $9.75 a share. if you own 50 shares, did ou have capital gain or loss ? how much of a gain or loss did you have ? express the capital gain/loss as a percent of the original price