Question

Find each of the following products
16. (3x2 + 5x -9) (3x - 5)
18. (x2 + xy + y²) x (x - y)
20. (9x2 - x +15) x (x2-3)
22. (x3 - 5x2 + 3x +1)x (x2-3)
24. (x2-5x + 8) x (x2+2x - 3)
26. (9x2 - x +15)*(x2 - x - 1)​

Answer 1

16. (11x - 9) (3x - 5)

= 33x² + 45

18. (2x + xy + y²) (x - y)

= -2x²y - x²y² - xy³

20. (17x + 15) (2x - 3)

= 34x² - 45

22. (-4x + 1) ( 2x - 3)

= -8x² - 3

24. (-3x + 8) (4x - 3)

= -12x² - 24

26. (17x + 15) (x - 1)

= 17x² - 15