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zubka84 [21]
3 years ago
8

Multiply the polynomials (x+3)(x^2-6x+5)

Mathematics
1 answer:
LekaFEV [45]3 years ago
3 0

Answer:

\huge\boxed{x^3-3x^2-13x+15}

Step-by-step explanation:

\text{Use FOIL:}\\\\(a+b)(c+d)=ac+ad+bc+bd

(x+3)(x^2-6x+5)\\\\=(x)(x^2)+(x)(-6x)+(x)(5)+(3)(x^2)+(3)(-6x)+(3)(5)\\\\=x^3-6x^2+5x+3x^2-18x+15\\\\\text{combine like terms}\\\\=x^3+(-6x^2+3x^2)+(5x-18x)+15\\\\=x^3-3x^2-13x+15

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