Question

(3x+2y)(3x-2y)-5x(x-y)-(2x-y)

(3x+2y)(3x-2y)-(x-3y)(3x+y) 2(2x-1)(2x+1)-5x(-x+3y)+4x(-4x^2-5/2y)

Answer 1

(3x+2y)(3x-2y)-(x-3y)(3x+y) =9x²-4y²-3x²+8xy+3y²=6x²+8xy-y²2(2x-1)(2x+1)-5x(-x+3y)+4x(-4x^2-5/2y)=2(4x²-1)+5x²-15xy-16x³-10xy=-16x³+13x²-25xy-2