Respuesta :
Answer:
a) subtracting '8' on both sides, we get
- 5 x² + 8-8 = 133-8
- 5 x² = 125
b) The solution is x = 5 i
Step-by-step explanation:
Explanation:-
Step (i):-
Given quadratic equation - 5 x² + 8 = 133
subtracting '8' on both sides, we get
- 5 x² + 8-8 = 133-8
- 5 x² = 125
Step(ii):-
dividing '-5' on both sides, we get
[tex]\frac{-5 x^2}{-5} = \frac{125}{-5}[/tex]
x² = -25
[tex]x = \sqrt{-25}[/tex]
x = 5 i
