Question

Com delta e Bhaskara

Answer 1

Explicação passo-a-passo:

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$\dfrac{x {}^{2} }{5} = \dfrac{x}{15}$

multiplique cruzado

$x {}^{2} \times 15 = x \times 5$

$15x {}^{2} = 5x$

$15x {}^{2} - 5x = 0$

$x(15x - 5) = 0$

$15x - 5 = 0$

$15x = 0 + 5$

$15x = 5$

$x = \dfrac{5 \div 5}{15 \div 5} = \dfrac{1}{3}$

s={0,1/3}