Question

pls solve these ques​

Answer 1

Answer:

9.)$b^2-ba+ba^2-a^3$

10.)$y^2-2by-ay+2ab$

11.)$ax-2a$

12.)$2ab$

13.)$bc^2-2bcd+bd^2-da+ca+5c-5d$

14.)$abc^2+abd^2-a^2cd-b^2cd$

15.)$abx^2+aby^2+a^2xy+b^2xy$

16.)$abx^2+aby^2-a^2xy-b^2xy$

17.)$a^2x^2+81b^2x^2-16abxy+b^2y^2+a^2y^2$

18.)$a^2+ab-ac-bc$

19.)$a^2-2ab-ac+2bc$

20.)$\left(x-2\right)\left(3x^4-2x^2+1\right)$

21.)$\left(a+b+c\right)\left(2-3x\right)$

22.)$\left(a^2+1\right)\left(b^2+1\right)$

I hope this is what you wanted: