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Multiply (x-9)(x^7+x^6+x^5+x^4+x^3+x^2+x+1).

Guest Sep 1, 2017

gibsonj338 · Answer 1 · 2017-09-01T07:51:27

$(x-9)({x}^{7}+{x}^{6}+{x}^{5}+{x}^{4}+{x}^{3}+{x}^{2}+x+1)$

${x}^{8}+{x}^{7}+{x}^{6}+{x}^{5}+{x}^{4}+{x}^{3}+{x}^{2}+1x-9{x}^{7}-9{x}^{6}-9{x}^{5}-9{x}^{4}-9{x}^{3}-9{x}^{2}-9x-9$

${x}^{8}-8{x}^{7}-8{x}^{6}-8{x}^{5}-8{x}^{4}-8{x}^{3}-8{x}^{2}-8x-9$

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