Question

Решите, пожалуйста :)

Answer 1

3.

1)     ....=3a+2b-c+a+b-2c=4a+3b-3c

2)    ...=2x+y-z+x+2y-2z=3x+3y-3z

3)    ...=15m³+n²-m+2m-n²-5m³=10m³+m

4.

1)   ...=2x²+y²+z²-3x²+2y²-2z²= - x²+3y² - z²

2)   ...=3m-2n²+p³-2m-n²+p³=m-3n²+2p³

3)   ...=0.1x³+0.3x²+x-0.4x³-0.1x²-x= - 0.3x³+0.2x²=0.2x²-0.3x³

4)   ...$=\frac{2}{3}a^{4}+\frac{3}{4}a^{3}+a^{2} -\frac{1}{3}a^{4} -\frac{1}{4}a^{3}-a^{2}=\frac{1}{3}a^{4} +\frac{2}{4}a^{3}=\frac{1}{3}a^{4}+0,5a^{3}$

7.

1)   ...=12x²y+y²-10y²+3x²y+y²-2x²y=13x²y - 8y²

2)   ...=2ab³+a³ - ab³ - 5a³+12ab³ - a³=13ab³ - 5a³