Question

Simplifique as expressões algébricas a seguir:
a) (2x² – 3x + 8) – (2x -2)=

b) (6x – 4x²) + (5 – 4x) – (7x² - 2x - 3) + (8 – 4x) =

Por favor me ajude ​

Answer 1

Resposta:

a) (2x² – 3x + 8) – (2x -2)=

$2 {x}^{2} - 3x + 8 - 2x + 2 \\ 2 {x}^{2} - 5x + 10 = 0$

b) (6x – 4x²) + (5 – 4x) – (7x² - 2x - 3) + (8 – 4x) =

$6x - 4 {x}^{2} + 5 - 4x - 7x {}^{2} + 2x + 6 + 8 - 4x = 0 \\ - 11 {x}^{2} + 19 = 0 \times ( - 1) \\ 11 {x}^{2} - 19 = 0$