Question

1) Efetue as seguintes adições de polinômios:
A) ( 4 × + 3 y + 1 ) + ( 6 × - 2 y - 9 )
B) ( 2 × ² -9 × + 2 ) + ( 3 × ² + 7 × - 1 )
C) ( 5 × ² + 5 × - 8 ) + ( - 2 × ² + 3 × - 2 )

2) Calcule as subtrações:
A) ( 6 × ² - 6 × + 9 ) - ( 3 × ² + 8 × - 2 )
B) ( 7 × - 4 y + 2 ) - ( 2 × - 2 y + 5 )
C) ( 5 × ² - 4 × + 7 ) - ( 3 × ² + 7 × - 1 )
D) ( 4 × - y - 1 ) - ( 9 × + y + 3 )
E ) ( - 2 a ² - 3 a + 6 ) - ( - 4 a ² - 5 a + 6 )
F) ( 4 × ³ - 6 × ² + 3 × ) - ( 7 × ³ + ² + 8 × )

Se for possível me ajudem...

Answer 1

1)

A) 12x + y - 8

B) 5x² - 2x + 1

C) 3x² + 8x - 10