Suppose the point (x, y) is translated vertically d units

Plzz help me with this

Click on the graphic until you find the right quotient. (36xa - 30xb) ÷ (-6x2)

Anyone know? will mark brainliest if you're correct!

What is the expression in factored form? 225x^2 - 144 a. 9(5x+4)^2 b. 9(5x-4)^2 c. 9(4x+5)(4x-5) d. 9(5x+4)(5x-4)