Question

b) x2 – 1= 0
c) x2 + 49 = 0
d) x2 - 18 = 0
e) x2 - 144 = 0
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Answer 1

Resposta:

b) x2 – 1= 0

$x^{2} =+1\\x=\sqrt{1}\\x=1$

c) x2 + 49 = 0

$x^{2} =-49\\x=\sqrt{49}\\x=7$

d) x2 - 18 = 0

$x^{2} =+18\\x=\sqrt{18}\\x=3\sqrt{2}$

e) x2 - 144 = 0

​$x^{2} =+144\\x=\sqrt{144}\\x=12$

Explicação passo-a-passo: