Question

Calcule : 

( 3x ² - 5x + 2 ) + ( 2x² + 9x + 12) = 

(3x – 9).(2x + 7 ) = 

(x + 1).(x – 6) = 

(7x² + 11x + 2 ) – (3x² + 4x + 9) =
​

Answer 1

Resposta:

293837929273638939273637

Answer 2

Explicação passo-a-passo:

primeira:

(3x ² - 5x + 2 ) + ( 2x² + 9x + 12)  

=5x²+4x+14

segunda:

(3x – 9).(2x + 7 )

= 6x²+3x-63

terceira:

(x + 1).(x – 6)

= x²-5x-6

quarta:

(7x² + 11x + 2 ) – (3x² + 4x + 9)

=4x²+7x-7