multiply

-(5y-6)(5y-4)

To multiply (5y-6)(5y-4), we will use the distributive property:

(5y-6)(5y-4) = 5y(5y) + 5y(-4) - 6(5y) - 6(-4)
= 25y^2 - 20y - 30y + 24
= 25y^2 - 50y + 24

So, the result of multiplying (5y-6)(5y-4) is 25y^2 - 50y + 24.