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RECALL: $(a+b)(c+d)=ac+ad+bc+bd$ (more popularly known as the FOIL method) Use the FOIL method to obtain: $(x^4-3)(2x+1) \\=x^4(2x) + x^4(1) + (-3)(2x)+(-3)(1) \\=2x^5+x^4+(-6x)+(-3) \\=2x^5+x^4-6x-3$
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