Question

1) 3xy²-5xy²-x²y+5x³y=

2) 5z-2z+10z=

3) -3a²-5a³+7a²-2a³=

4) 2xy.2xy=

5) 7x².5x³=

6)(-2x³y⁴).(-3x³y²)=

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Answer 1

1)3xy²-5xy²-x²y+5x³y=

$[−2xy2−x {}^{2} y+5x {}^{3} y$

2)5z-2z+10z=

$13z$

3)3a²-5a³+7a²-2a³=

$−7a {}^{3} +4a ^{2}$

4) 2xy.2xy=

$4x {}^{2} y {}^{2}$

5) 7x².5x³=

$35x {}^{5}$

6)(-2x³y⁴).(-3x³y²)=

$6x {}^{6} y {}^{6}$