Step-by-step explanation:
........4x-y=11........
Answer: here is a app to use
Socratic by Google
Step-by-step explanation:
Socratic by Google its on iphone and sumsung
Answer:
The value of
is -16.
Step-by-step explanation:
We need to evaluate
for x = -1, y = 5 and let us assume that z = 1
It can be simply done by putting the values of x,y and z in the given expression.

We know that the value of 4² = 16
So,

So, the value of
is -16.