Question

Evaluate each of following algebraic expressions for x = 1, y = 1, z = 2, a= -2, b= 1 , c=-2
(ii) ax'2 + by'2 - cz'2
​

Answer 1

Answer:

-2×1²+1×1²-[(-2)×2²]

= -2+1+8

=-1+8

=7