Find the factors of 9q²-45pq+8q-40p. Choose the correct option. a) (-5q+p)(9q+8)
b) (9q+8)(q-5p)
c) (5p+q)(9q+8)
d) (-5p+q)(8q+9)

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(x−5y)(9x+8)

Step-by-step explanation:

9x^2−45yx+8x−40y

Do the grouping 9x^2−45yx+8x−40y=(9x^2−45yx)+(8x−40y), and factor out 9x in the first and 8 in the second group.

9x(x−5y)+8(x−5y)

Factor out common term x−5y by using distributive property.

(x−5y)(9x+8)

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