Answer:a x=-27 b x=0
Step-by-step explanation:
X = 3
y = -3
You will see this using any graphing tool at your disposal.
Step-by-step explanation:
the question is z²=1
taking square root on both sides
√z² = √1
the square root and the square cancel out each other
it gives
z=±1
that means either z=+1 or z=-1
so the solutions are 1 and -1
