Question

Calcule: Urgenteeeeeeee
A- (3a²-5b+2a)+(5a²-3b-2a)
B- (3x²-5x+2)-(x²+6x-4)
C- (x³+x²)-(x³-2xy-y²)+(x²+xy+3y²)
D- (3a-b)-(5a-a)+(3a-b)

Answer 1

A-
(3a²-5b+2a)+(5a²-3b-2a)
=8a²-8b

 B-
(3x²-5x+2)-(x²+6x-4)
=2x²+x-2

 C-
(x³+x²)-(x³-2xy-y²)+(x²+xy+3y²)
=2x²+3xy+4y²

D-
(3a-b)-(5a-a)+(3a-b)
3a-b-4a+3a-b
=-2a-2b