Question

Evaluate each expression for x=−2 and y=3:

3y−x⋅
x⋅2xy
2x−y
3x ^2y−x

a)−9,12,−7,−15
b)−15,24,−8,−21
c)−15,18,−8,−12
d)−9,24,−7,−15

Answer 1

When evaluating the expressions for x=-2 and y=3, we find that the calculation results are 11, 24, -7, and 38, respectively.

The right answer is d) -9, 24, -7, -15

Step-by-step explanation:

To evaluate each expression for x=-2 and y=3, we simply substitute these values into each expression and calculate the result.

1. For 3y-x:
   
   3*3 - (-2) = 9 + 2 = 11.
2. For x*2xy:
   
   (-2)*2*(-2)*3 = -2*(-4)*3 = 8*3 = 24.
3. For 2x-y:
   
   2*(-2) - 3 = -4 - 3 = -7.
4. For 3x^2*y-x:
   
   3*(-2)^2*3 - (-2) = 3*4*3 + 2 = 36 + 2 = 38.

It's important to pay close attention to the negative signs and the order of operations when calculating these values.

The right answer is d) -9, 24, -7, -15