Charalover74
Charalover74 Charalover74
  • 19-09-2019
  • Mathematics
contestada

8. 2²=1
o=0
z=
+
The solutions are
and​

8 21o0zThe solutions areand class=

Respuesta :

mahamahmood95
mahamahmood95 mahamahmood95
  • 19-09-2019

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

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