Question

Gente me ajuda por favor!!!!

Answer 1

a) (7ab2- 3a+5b)+ (-2ab2+a-b)
7ab2-3a+5b-2ab2+2-b
5ab2-2a+4b

b) (3a2-5ab+2c-2bc)-(5a2-5ab-2bc)
3a2-5ab+2c-2bc-5a2+5ab+2bc
-2a2+2c

c)(3/2 Y2- 3Y-2) + (2/3 Y2+ 1/4 y + 1/2)
3/2 y2-3y-2+2/3y2 + 1/4 y+ 1/2
13/6 y2- 11/4 y- 3/2

d) (X/2 -3yx/4+ y/3) - ( 3y/2 -xy/3 -2x)
(X/2- 3xy/4+ y/3) -3y/2 + xy/3+2x
x/2-3xy/4+y/3-3y/2+xy/3+2x
5/2x-5/12 xy- 7/6 y