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svlad2 [7]
3 years ago
11

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

Mathematics
1 answer:
OLEGan [10]3 years ago
8 0

Answer:

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

Step-by-step 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

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