Answer:
4r to the power of 2 - 3r +1
The answer to "12x-(4y+7z) for x=9 y= 4 and z = 2" is 78.
x: -2
f(x): 1.5
x: 0
f(x): 0.5
x: 3
f(x): -1
Step-by-step explanation:
214
X 90 z 90 y 90
