Question

x=3 y=-1 and z=-2, find the value of the following expressions:

a. 5x²yz - 3xy²z + 4xyz
b. x² + y² + z² - xy - yz - zx
c. xy² - cuz + 9xy²z + 16​

Answer 1

Answer:

(a) 5×3×3-1×-2-(3×3×-1×-1×-2)+(4×3×-1×-2)=132answer

3×3+(-1×-1)+(-2×-2)-(3×(-1))-(-1×(-2))-(-2×3)= 25answer