Question

7 x elevada a 2 - 343 = 0

Answer 1

Hola,

${7x}^{2} - 343 = 0$

Resolvemos la ecuación:

${7x}^{2} - 343 = 0 \\ {7x}^{2} = 343 \\ {x }^{2} = \frac{343}{7} \\ {x}^{2} = 49 \\ x = - / + 7$

Solución:

x1 = 7
x2 = - 7



Espero que te sirva, Saludos.