Question

400=100+x elevado a la 2
Resolución porfa!

Answer 1

$400= 100+ x^{2}$

$400-100 = x^{2}$

$300 = x^{2}$

$\sqrt{300} = \sqrt{ x^{2} }$

$10 \sqrt{3} = x$

Answer 2

 

X ELEVADO ALA 2 = 400 +100
X ELEVADO ALA 2 = 500
X =500.500
X=250 000