Question

Resolva as equações incompletas



a) 4x²= 81

b) x²= 625

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Answer 1

Resposta:

$a) \: {x}^{2} = \frac{81}{4} \\ x = \sqrt{20.25} \\ x = 4.5$

$b) \: x \: = \sqrt{625} \\ x = 25$