Question

Ecuación de 5x²-7x2=0 con fórmula general ​

Answer 1

Respuesta:

x1=1

x2=2/5

Explicación paso a paso:

$x=\frac{-b+-\sqrt{b^{2}-4ac } }{2a} \\\\a=5; b=-7; c=2x=\frac{-(-7)+-\sqrt{(-7)^{2}-4(5)(2) } }{2(5)} \\\\x=\frac{7+-\sqrt{49-40 } }{10} \\\\\\x=\frac{7+-3 }{10}\\\\x_{1} =\frac{7+3 }{10}=1\\\\x_{2} =\frac{7-3 }{10}=\frac{4}{10}=\frac{2}{5}$