Question

24. 5x(x – 4)
25. (2x + 5)(3x – 4)
26. (4x - 9)(5x – 8)
27. (x 2 – 4x + 7)(2x 2 + 6x – 8)
28. (4x 2 – 7x -8)(2x 3 – 3x 2 + 4x – 3) por favor7. 3m 2
8. (x - y) 3
9. 5(x + m)
10.
11. x 2 - y

Answer 1

24. 5x(x – 4)= (5x(x)) + (5x(-4)) = 5x² - 20x

25. (2x + 5)(3x – 4)= (2x(3x) + (2x(-4) + 3x(5) + 5(-4)= 6x² -8x + 15x -20 = 6x²+7x-20

26. (4x - 9)(5x – 8)=(4x(5x))+(4x(-8))+(5x(-9)+(-9(-8))=20x²-32x-45x+72= 20x²-77x+72

27. (x 2 – 4x + 7)(2x 2 + 6x – 8) = 2x⁴-2x³-18x²+74x-56

28. (4x 2 – 7x -8)(2x 3 – 3x 2 + 4x – 3)= 8x5-26x⁴+21x³-6x²-11x+24

7. 3m 2= 3m²

8. (x - y) 3=x(3)-y(3)= 3x - 3y

9. 5(x + m)= 5(x) +5(m) = 5x + 5m

10. ?

11. x 2 - y= x²-y