Question

va rog repede am nevoie urgent

Answer 1

Răspuns:

Explicație pas cu pas:

a) 3x-5y+3y-x = 3x-x +3y-5y = 2x-2y

b) 4x²+3x+2-3x²-2x+3 = 4x²-3x²+3x-2x+2+3 = x²+x+5

c) 7a+3b-5b-8a = 7a-8a+3b-5b = -a-2b

d) 10x²+5x-1-7x²-3x+8 = 10x²-7x²+5x-3x+8-1 = 3x²+2x+7

e) -6ax-0,2a²+2x+1,2a²+3ax-2x =

= 1,2a²-0,2a²+3ax-6ax+2x-2x = a²-3ax

f) 2x²+y²-4xy-4y²+xy-x² = 2x²+x²+xy-4xy+y²-4y² = 3x²-3xy-3y²

g) -x³y+x²y²+x³y+2xy-x²y²+1-2xy =

= x³y-x³y+x²y²-x²y²+2xy-2xy+1 = 1

h) 2x³-y³+3x²+y³ = 2x³+3x²+y³-y³ = 2x³+3x²