Question

Resolva as equações do 2o grau incompletas, referentes ao 3o caso:
a) 6x2 – 24 = 0
f) 2x2 – 32
7x2 = 0
x2 = 0 x = √0 x = 0 S =
x2 = 0
x1 = 0
2x2 – 10x = 0 x . (2x – 10) = 0
^
x2 = 5 S = {0; 2}
2x – 10 = 0
2x = 10
x =
2x2 – 72 = 0 2x2 = 72
x2 = 36 x = ±√36 x = ± 6 S = {-6;
x2 = 72
x2 + 4x = 0 x . (x + 4) = 0
^ x1 = 0 x + 4 = 0
x2 = - 4 S = {0; - 4}
= 0

Answer 1

Resposta:

$2x - 10 = 0 \\ 2x = - 10 \\ x = \frac{10}{2} \\ x = 5 \\ x = \frac{ + }{ - } \sqrt{5} \\ x = 2.23 \\ s = + 2.23 - 2.23) \\ \\ {x}^{2} + 4x = 0 \\ {x}^{2} = 4 \\ {x}^{2} = \frac{ + }{ - } \sqrt{4} \\ {x}^{2} = 2 \\ s = ( + 2 - 2)$

Espero tê-la ajudado