Add 4x2 9x- 3 and x2 x3ndash x4 and write the

Question

15. Add 4x² + 9x- 3 and x² + x³– x⁴ and write the resulting polynomial in descending order.

16. Subtract 6n² -  4n from 5n²   -2n.

17. Subtract –3x² + x from 8x² + 3x.

18. Mulitply –5x and 5x³ + 2x² + 2.

19. Multiply x + 3 by x – 12.

20. Find (y – 8)².

21. Find (9x – 7y)(9x + 7y).

22. Multiply.

(x -2)(x² + 2x + 4)

A) x³ + x²-  27

B) x³ - 8

C) x³ + 4x² + 8x + 8

D) x³ – 4x² + 8x – 8

23. Multiply.

3m(m – 3)(8m + 1)

24. Divide –30x³ + 40x² – 5x by 5x.

25. Divide  7x² – 9x – 10 by x – 2.

Attachment:- Write the resulting polynomial.doc