What is the product? (5r − 4)(r2 − 6r + 4) 5r3 − 34r2 + 44r − 16 5r3 − 4r2 + 14r − 16 5r3 − 6r − 16 5r3 + 10r − 16

=(5r − 4)(r^2 − 6r + 4)
multiply each term in left parentheses by each term in right parentheses

=(5r*r^2) + (5r*-6r) + (5r*4) + (-4*r^2) +
(-4*-6r) + (-4*4)
multiply

=5r^3 - 30r + 20r - 4r^2 + 24r - 16
combine like terms

=5r^3 - 4r^2 + (-30r + 20r + 24r) - 16

=5r^3 - 4r^2 + 14r - 16

ANSWER: 5r^3 - 4r^2 + 14r - 16 (2nd answer given)

Hope this helps! :)

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