d) 21 (1 g) x (x - y) 1) - 3pq (2p + 79) m) - 8x (x2 – 2x + 1) h) 4xy (2x + 3y) i) 2ab (5a? - 4b- k) – 2bc (9b - 50) 1) – 5xy (3x2 – 6y) n) - 7a (2a2 + 30 - 5) 0) – 2xy (3x – 5x – 4y") TC 3 and 1 = 2a show that xy = 2a2 + 6a

Long division setup showing an incomplete calculation. 12 is in the divisor, 6839 is in the dividend, and 5 hundreds and 6 tens is written in the quotient. 6000 is subtracted from 6839 to give 839. an unknown value represented by a box is being subtracted from 839. what number should be placed in the box to complete the division calculation?