Question

Wyrażenia Algebraiczne. 1. x-(2y+x+z) + (y-x-z) = 2. -(2a-3b+5) + (4a - 7b +3) - (-3a-2b) = 3. 5a(a-2)+2a(a+5) = 4. 8x(x+y) - 2y(y-z) + 2(y+xy) = 5.8a+4b ---------- 4 6.5(a+b) - (b-a) ------------------ 2

Answer 1

1. x-(2y+x+z) + (y-x-z) = x-2y-x-z+y-x-z=-x-y-z

2. -(2a-3b+5) + (4a - 7b +3) - (-3a-2b) =-2a+3b-5+4a-7b+3+3a+2b=5a-2b-2

3. 5a(a-2)+2a(a+5) =5a²-10a+2a²+10a=7a²

4. 8x(x+y) - 2y(y-z) + 2(y+xy) =8x²+8xy-2y²+2yz+2y+2xy=6y²+10xy+2y+2yz

5. 8a+4b/4= 4(2a+b)/4= 2a+b

6.5(a+b)-(b-a)/2=5a+5b-b+a/2=6a+4b/2=2(3a+2b)/2=3a+2b