Answer
$-8d^2+26d-15$.
Work Step by Step
The given expression is
$=(3-4d)(2d-5)$
Distribute $(2d-5)$ to each term of $(3-4d)$.
$=3(2d-5)-4d(2d-5)$
Use distributive property.
$=3(2d)+3(-5)-4d(2d)-4d(-5)$
Multiply.
$=6d-15-8d^2+20d$
Combine like terms.
$=-8d^2+26d-15$
Hence, the product is $-8d^2+26d-15$.