Question

ayuda porfavor
no le entiendo ​

Answer 1

Respuesta:

1. x= 3

2. x= 3

Explicación paso a paso:

1.

$5x^{2} =45\\x^{2} = \frac{45}{5} \\x^{2} = 9\\x= \sqrt{9} \\x=3$

2.

$\frac{2}{3}x^{2} +14=20\\\\\frac{2}{3}x^{2} =20-14\\\\\frac{2}{3}x^{2} =6\\x^{2} =\frac{6}{\frac{2}{3} }\\x^{2} = 9\\x=\sqrt{9}\\x= 3$