Question

iiiuuuuuu. plisssssss​

Answer 1

hai salut!

a) 6x+3x-4x = 9x-4x = 5x

b) 3a(a-2) + (a+1)(a+3) = 3 × a²  + (a+1) × a + (a+1) × 3 = 3 × a² + a² + 3a + 3

  = 4 × a × a + 3a + 3 = 7a × a + 3

sper ca te-am ajutat! coronita? :)

Answer 2

Bună! Răspunsul este mai jos.

a)

$6x + 3x - 4x = (6 + 3 - 4)x$

$= 5x$

b)

$3a(a - 2) + (a + 1)(a + 3)$

$3a^{2} - 6a + (a + 1) \times (a + 3) = 3 {a}^{2} - 6a + {a}^{2} + 3a + a + 3$

$4 {a}^{2} - 6a + 3a + a + 3$

$= 4 {a}^{2} - 2a + 3$