a. 2x+(3x-y)-(2x-y) b. 3(x-y)-(2x-y) c. (x-1)(2x+2)-(2x-3)(x+1) d. (3x-2)ptega2+(x+y)(x-1)-10(x+1)

a. 2x+(3x-y)-(2x-y)=2x+3x-y-2x+y=3x b. 3(x-y)-(2x-y)=3x-3y-2x+y=x-2y c. (x-1)(2x+2)-(2x-3)(x+1)=2x²-2x+2x-2-2x²-2x+3x+3=x+1 d. (3x-2)ptega2+(x+y)(x-1)-10(x+1) =9x²-12x+4+x²+x+yx-y-10x-10=10x²-21x-6+yx-y

a.2x+3x-2x+y=3x+y b.3x-3y-2x+y=x-2y

a) 2x+(3x-y)-(2x-y) = 2x + 3x - y - 2x + y = 3x b) 3(x-y)-(2x-y) = 3x - 3y - 2x + y = x - 2y c) (x-1)(2x+2)-(2x-3)(x+1) = 2x² + 2x - 2x - 2 - 2x² - 2x + 3x + 3 = x + 1 d) (3x-2)²+(x+y)(x-1)-10(x+1) = 9x² - 4 + x² - x + xy - y - 10x - 10 = 10x² + xy - 11x - y -14