Answer
$-9x^2+3x+9$.
Work Step by Step
The given expression is
$=(5x-7)(3x-2)-(4x-5)(6x-1)$
In each operation multiply the second bracket by each term of the first bracket as shown below.
$=5x(3x-2)-7(3x-2)-[4x(6x-1)-5(6x-1)]$
Clear the parentheses.
$=15x^2-10x-21x+14-[24x^2-4x-30x+5]$
Simplify.
$=15x^2-31x+14-[24x^2-34x+5]$
$=15x^2-31x+14-24x^2+34x-5$
$=-9x^2+3x+9$.
