Sederhanakanlah, (1) (4a – 2b) – (a + 5b), (2) (x² + 3x + 7) – (-6x² – 2x + 5), (3) (8x + 7y) + (x – 2y), (4) (x + 4y – 1) + (2x + 6)

Sederhanakanlah.

(1) (4a – 2b) – (a + 5b)

(2) (x² + 3x + 7) – (-6x² – 2x + 5)

(3) (8x + 7y) + (x – 2y)

(4) (x + 4y – 1) + (2x + 6)

Jawaban

(1) 3a – 7b

(2) 7x² + 5x + 2

(3) 7x + 9y

(4) -x + 4y – 7