con thieu 2 don vi do do dai

Đổi tên ntn vậy ?

Hãy chia sẻ cho các bạn hoc24 biết làm thế nào để không bị bí từ ? Làm thế nào để có bài văn hay ? Làm thế nào để mở rộng vốn từ ?

25 %chấm hết

198 + 1787 = 1985

nhé

x=0

vi so nao nhan voi 0 cung =0

58km 

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1. tự sắp nha

2. * P(x) + Q(x) = 3x⁵ + 5x - 4x⁴ - 2x³ +6 + 4x² + 2x⁴ - x + 3x² - 2x³ + 1/4 - x⁵

                     = 3x⁵ - x⁵ + (-4x⁴ + 2x⁴) + 2x³ - 2x³ + 4x² + 3x² + 5x - x + 6 + 1/4

                     = 2x⁵ - 2x⁴ + 7x² + 4x + 25/4

* P(x) - Q(x) = (3x⁵ + 5x - 4x⁴ - 2x³ + 6  + 4x²) - (2x⁴ - x + 3x² - 2x³ + 1/4 - x⁵)

                  = 3x⁵ + 5x - 4x⁴ - 2x³ + 6 + 4x² - 2x⁴ + x - 3x² + 2x³ - 1/4 + x⁵

                 = 3x⁵ + x⁵ + (-4x⁴ - 2x⁴) + (-2x³ + 2x³) + 4x² - 3x² + 5x + x + 6 - 1/4

                =     4x⁵ - 6x⁴ + x² + 6x + 23/4

3. ko bít

S HCN LÀ :

   36 x 2 = 72

CR hcn là :  

     72 : 12 = 6

CV hcn là :

   (12+6)x 2 = 36

Đs ...