factor by grouping. 9vu - 15u + 3v - 5

Explanation:

Step1: Group the terms

$(9vu - 15u)+(3v - 5)$

Step2: Factor out common factors from each group

$3u(3v - 5)+1(3v - 5)$

Step3: Factor out the common binomial factor

$(3v - 5)(3u + 1)$

Answer:

$(3v - 5)(3u + 1)$