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
Answer:
true
a square will always be a rectangle but a rectangle will not always be a square.
Answer: 0
Substituting in x=0, we get
