Question

resolva as equaçoes R , isto e reais

a) x²=4
b)x²=0,09
c)x²=49 sobre 121
e)x²=1
f)x²=1
g)x expoente 4 = -16
h x³=1 sobre 8

Answer 1

Olá.

$A)\\x^2=4\\x=\sqrt{4}\\x=2\\\\B)\\x^2-0,09\\x^2=0,09\\x=\sqrt{0,09}\\\boxed{x=0,3}\\ \\ C)\\x^2=\dfrac{49}{121}\\\\x=\sqrt{\dfrac{49}{121}}\\\\\boxed{x=\dfrac{7}{11}}\\\\\\E)x^2=1\\x=\sqrt{1}\\\boxed{x=1}\\\\ F)x^2=1\\x=\sqrt{1}\\\boxed{x=1}\\\\ G)x^4=-16\\x=\sqrt[4]{-16}=\emptyset \\\\\\H)\\x^3=\dfrac{1}{8}\\\\x=\dfrac{\sqrt[3]{1}}{\sqrt[3]{8}}\\\\\boxed{x=\dfrac{1}{2}}$

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Bons estudos.