Question

x²​-49=

81-x²​=

ayuda a factorizarlo :,v

Answer 1

7

9

Explicación paso a paso:

${x}^{2} = 49 \\ x = \sqrt{49 } \\ x = 7$

$81 = {x}^{2} \\ \sqrt{9 } = x \\ 3 = x$