Question

If x = -3, y = 5 and z = -2, evaluate the following:help plsssssnote giving brilst​

Answer 1

Answer:

(iii) (-3)^2 - (5)(-2)/(-2)^2

9 - (-10)/ 4

9+10/4

19/4

4.75

(iv) (-3)^2 + (5)^2 + (-2)^2/(-3)(5)(-2)

9 + 25 +4 / 30

9 + 29 / 30

38 / 3

1.26

(v) (-3) + (5)/(-2) + (5) + (-2)/(-3)

-8 / -2 + -10 / -3

4 + -10/ -3

LCM = -3

-12 + (-10)/ -3

-22/-3

7.3

(vi) 2(-3) + (5) - (-2)/(-3) - 3(5) + (-2)

-6 + 5/-3 -15 -2

-1 / -3 -17

-1 / -20

1/20

Answer 2

Answer:

3) x^2-yz/z^2

x = -3, y = 5 and z = -2 plug in these values

-3^2 -5(-2) /-2^2

= -1/4

decimal form: -0.25

4) x^2+y^2+z^2/xyz

x = -3, y = 5 and z = -2 plug in these values

-3^2+5^2+-2^2/-3*5*-2

= 2/5

decimal form: 0.4

5) x+y/z + y+z/x

x = -3, y = 5 and z = -2 plug in these values

(-3+5/-2)+(5+(-2)/-3)

= -2

6) 2x+y-z/x-3y+z

x = -3, y = 5 and z = -2 plug in these values

2(-3)+5-(-2)/-3-3(5)+(-2)

= -1/20

decimal form: -0.05