Question

Calcule el conjunto solución de las siguientes ecuaciones cuadrática ​

Answer 1

Verified answer

Respuesta:

[tex]x = \frac{ - ( - 17) ± \sqrt{( - 17) {}^{2} - 4 \times 4 \times ( - 15)} }{2 \times 4} [/tex]

[tex]x = \frac{17 ± \sqrt{( - 17) {}^{2} - 4 \times 4 \times ( - 15) } }{2 \times 4} [/tex]

[tex]x = \frac{17 ± \sqrt{289 - 4 \times 4 \times ( - 15)} }{2 \times 4} [/tex]

[tex]x = \frac{17 ± \sqrt{289 + 240} }{2 \times 4} [/tex]

[tex]x = \frac{17 ± \sqrt{289 + 240} }{8} [/tex]

[tex]x = \frac{17 ± \sqrt{529} }{8} [/tex]

[tex]x = \frac{17 ±23}{8} [/tex]

[tex]x = \frac{17 + 23}{8} = x = 5[/tex]

[tex]x = \frac{17 - 23}{8} = x = - \frac{3}{4} [/tex]