Question

a = 1; b= 0 e c = 7 ajuda eu galera

Answer 1

Resposta:

a = 1; b= 0 e c = 7

* Achar o Δ

Δ= b²-4.a.c

Δ= 0²-4.1.7

Δ= 0-28

Δ= -28 (-1)

Δ = 28

$x=\frac{b^{2}+-\sqrt{\delta } }{2a} \\\\x= \frac{0^{2} +-\sqrt{28} }{2.1} \\\\x^{'} = \frac{0+\sqrt{28} }{2} \\\\x^{'} = \frac{0+2\sqrt{7} }{2} \\\\\\\\x^{'} =\sqrt{7} \\\\x^{''} = \frac{0-\sqrt{28} }{2} \\\\x^{''} = \frac{0-2\sqrt{7} }{2} \\\\\\\\x^{''} = -\sqrt{7}$