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What is the product of (5r+2)(3r-4)
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What is the product of (5r+2)(3r-4)

User Manuelkruisz
by
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1 Answer

1 vote

Answer:


\large\boxed{(5r+2)(3r-4)=15r^2-14r-8}

Explanation:


(5r+2)(3r-4)\qquad\text{use FOIL:}\ (a+b)(c+d)=ac+ad+bc+bd\\\\=(5r)(3r)+(5r)(-4)+(2)(3r)+(2)(-4)\\\\=15r^2-20r+6r-8\qquad\text{combine like terms}\\\\=15r^2+(-20r+6r)-8\\\\=15r^2-14r-8

User Artem Kachanovskyi
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