Question

alguien plis se los ruego​

Answer 1

Explicación paso a paso:

ACTIVIDAD 1:

1)$4x^{2} -64=0\\\\x^{2} -16=0\\\\x^{2} =16\\\\x=4$

2)$-25x^{2} +50=-175\\\\-25x^{2} =-225\\\\25x^{2} =225\\\\x^{2} =25\\\\x=5$

3)$\frac{3}{2} x^{2} -\frac{2}{3}=0\\\\9x^{2} -4=0\\\\9x^{2} =4\\\\x^{2} =\frac{4}{9} \\\\x=\frac{2}{3}$

4)$\frac{16}{11} x^{2} -2=\frac{3}{4}\\\\64x^{2} -88=33\\\\64x^{2} = 121\\\\x^{2} =\frac{121}{64} \\\\x=\frac{11}{8}$

ACTIVIDAD 2:

1)$4x^{2} -9=391\\\\4x^{2} =400\\\\x^{2} =100\\\\x=10$

2) largo = 2x; ancho = x

$Area=largo*ancho\\\\675=2x*x\\\\675=2x^{2} \\\\337.5=x^{2} \\\\18.37=x$

Entonces: largo = 2(18.37)=36,74m

y el ancho = 18.37m