Question

if x = 3, y = -2 and z = 5, find the value of 3x^2 - 4y^2 - 5z^2

Answer 1

Answer:

Step-by-step explanation:

Given that : x=3 , y=-2 and z=5

Eqn : 3x^2 - 4y^2 - 5z^2

= 3(3)^2 - 4(-2)^2 - 5(5)^2

= 3x9-4x4-5x25

= 27-16-125

= -114

Answer 2

Step-by-step explanation:

Given :

x = 3

y = -2

z = 5

Solution :

$3 {x}^{2} - 4 {y}^{2} - 5 {z}^{2}$

$- > 3( {3})^{2} - 4( { - 2})^{2} - 5( {5})^{2}$

$- > 3(9) - 4( 4) - 5(25)$

$- > 27 - 16 - 125$

$- > -114$

I hope it helps u dear friend ^_^♡♡