Question

Fi find the value of the low algebraic expression for X equal to 2 y equal to -1 and z is equal to two for the question 3* 3 - 2 x (4 y z+5x2

Answer 1

Answer:

Given x=−2,y=−1,z=3

x

2

+y

2

+z

2

−xy−yz−zx

=(−2)

2

+(−1)

2

+(3)

2

−(−2)(−1)−(−1)(3)−(3)(−2)

=4+1+9−2+3+6

=14−2+9

=12+9

=21