Question

1.Simplify- (8m^2-n^2)-(5n^2+8n-3)
2. what should be added to 9y^2x-3xy to get 5xy+2
PLZZ HELP!!!

Answer 1

Answer:

1. 8m²-6n²-8n+3

2. -9y²+8xy+2

Step-by-step explanation:

1. (8m²-n²)-(5n²+8n-3)

8m²-n²-5n²-8n+3

8m²-6n²-8n+3

2. let a should be added to 9y²x-3xy

then,. (9y²x-3xy) + a = 5xy+2

9y²x -3xy +a = 5xy +2

a = 5xy+3xy -9y²x +2

a= 8xy -9y²x +2

a= -9y²x + 8xy +2