Respuesta :

annaboglino

Answer:

16

Step-by-step explanation:

3x² + 4y² where x = 2, y = 1, and z = -3

Here we just need to plug in the given values to their respective variables

  • 3(2)² + 4(1)²
  • There are no z variables in this equation so plugging in z = -3 is irrelevant
  • Simplifying our equation we now have: 3(4) + 4(1) = 12 + 4 = 16
maxwellekoh

Answer:

0 if the original expression is : 3x^2 + 4yz

Step-by-step explanation:

3x^2 + 4yz ; I guess this is the original expression.

When x=2, y = 1 z =-3

3x^2 + 4yz = 3(2)^2 + 4 × (1)×(-3)

= 3×4 + 4 × (-3) = 12 - 12 = 0