Question

Subtract the second expression from the first.

i. (6x² + 7xy + 16y²); (16x² – 17xy) 

ii. (4x + 16z); (19y – 14z + 16x)

Answer 1

iv. (6x² + 7xy + 16y²) – (16x² – 17xy) 

= 6x² + 7xy + 16y² – 16x² + 17xy 

= (6x² – 16x²) + (7xy + 17xy) + 16y² 

= -10x² + 24xy + 16y²

v. (4x + 16z) – (19y - 14z + 16x) 

= 4x + 16z – 19y + 14z – 16x 

= (4x – 16x) – 19y + (16z + 14z) 

= -12x – 19y + 30z