Explicación paso a paso:
[tex] log(32 + x {}^{2} ) - 2 log(4 - x ) = 0[/tex]
[tex] log(32 + x {}^{2} ) {}^{ - 2} - 2 log(4 - x {}^{ } ) {}^{ - 2} = 0[/tex]
[tex] log((32 + x {}^{2} ) \times \frac{1}{(4 - x) { }^{2} } ) = 0[/tex]
[tex] log( \frac{32 - x {}^{2} }{(4 - x) {}^{2} } ) = 0[/tex]
[tex] \frac{32 - x {}^{2} }{(4 - x) {}^{2} } = 1[/tex]
32-x²=(4-x)²
32-x²=16-8x+x²
-16+32=-8x
16=-8x
-2=x
