Evaluating expressions and order of operations

What is the value of the expression
x² + y² + x - y 
when x = -1 and y = 3

• 6
• 8
• 12
• 16

evaluate bc + 5a  
when  a = 3, b = 4, and c = -6

• 9
• 38
• -38
• -9

a²-b²Evaluate if a=4 and b =-2

• 4
• 20
• -4
• 12

g²-3(h-g)Evaluate if g=3 and h=-2

• 6
• 9
• 24
• 5

9a - ab + 5b    
if a = 2 and b = 7

• 37
• 67
• 39
• 32

r³ + 2s²    
 if r = -3  and s = 4

• 59
• 5
• 37
• 91

2x + 5(y - 1) when x=8 and y=5

• 20
• 31
• 36
• -4

3(2x + z) when x=8 and z=2

• 12
• 30
• 54
• 60

evaluate bc + 5a  
when  a = 3, b = 4, and c = -6

• 9
• 38
• -38
• -9

Evaluate if a = 2 and b = 8
6 + 7b - 3a

• -100
• 100
• -56
• 56