Question

Plz help with 1 2 and 3

Answer 1

20

2.5

32

Explanation:

10x^2 / (y+1)

10(2)^2 / (1+1)

10(4) /2

40/2

20

10(-1)^2 / (3+1)

10(1) / 4

10/4

2.5

10(-4)^2 / (4+1)

10(16) /5

160/5

32

Answer 2

1. 2 12.56, 3 28.26, 4 50.24

2. -4,2 -10; 0,2 -2; 4,2 6

3. 2,1 20; -1,3 2.5; -4,4 32