The given expression is
(-3x+4)(2x-1)
To multiply, we would apply the distributive property of multiplication. We would multiply each term in the first parentheses with each term in the second. We have
(- 3x * 2x) + (- 3x * - 1) + (4 * 2x) + (4 * - 1)
= - 6x^2 + 3x + 8x - 4
= - 6x^2 + 11x - 4