Question

equaçao irracionais

1-x= raizx²-12

Answer 1

1-X = $\sqrt{x^2 - 12}$
(1-X)² = X² - 12
1 -2X + X² = X² -12
13 = 2X
X = 13/2

Answer 2

$1 - x = \sqrt{x^2-12}$

eleva ao quadrado ambos os lados

$(1 - x )^2 = ( \sqrt{x^2-12} )^2$

$1-2x+x^2 = x^2-12$

$1-2x = -12$

$2x = -13$

$x = \frac{13}{2}$