Respuesta :
The product is: 5r³ -34r² + 44r -16
What is expression?
An expression is a combination of numbers, variables, functions (such as addition, subtraction, multiplication or division etc.)
Given:
(5r − 4)(r² − 6r + 4)
= 5r*r² - 5r *6r + 5r * 4 - 4r²+ 24r -16
= 5r³ - 30r² + 20r -4r² + 24r - 16
= 5r³ -34r² + 44r -16
Learn more about expression here:
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