2x(4x)-5X=

1

2

2x (4x) - 5x 2x 4x - 5x

2x .4x - 5x

8xx - 5x

3

<

4

2x (4x) - 5x

8xx - 5x

8x² - 5x

(8x - 5) x

Resposta:

8x^2-5x

[tex]2x(4x) - 5x = \\ 2x(4x) - 5x \\ 2x \times 4x - 5x \\ 2x \times 4x \\ 8x \times x \\ 2x \times 4x \\ 8x {}^{2} \\ 2x \times 4x - 5x \\ 8x {}^{2} - 5x \\ resposta \\ 8x {}^{2} - 5x[/tex]