20-06-2018
Mathematics

contestada

what is the value of x in the equaton
[tex] {25}x^{2} = 16[/tex]

Respuesta :

30-06-2018

[tex]25x^2=16\ \ \ |:25\\\\x^2=\dfrac{16}{25}\to x=\pm\sqrt{\dfrac{16}{25}}\\\\x=-\dfrac{\sqrt{16}}{\sqrt{25}}\ \vee\ x=\dfrac{\sqrt{16}}{\sqrt{25}}\\\\\boxed{x=-\dfrac{4}{5}\ \vee\ x=\dfrac{4}{5}}[/tex]

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