Question

Ecuaciones irracionales

Answer 1

Solamente se debe elevar al cuadrado para desaparecer raices

$\sqrt{ x - 1} = 5$

x - 1 = 25

x = 26

$\sqrt{ {x }^{2} + 9} = 1 + x$

${x}^{2} + 9 = {x}^{2} + 2x + 1$

8 = 2x

4= x

$\sqrt{5x - 1} = 2 \sqrt{x + 3}$

5x - 1 = 4(x + 3)

5x - 1 = 4x + 12

x = 13

$\sqrt{x - 5 } = 3$

x - 5 = 9

x = 14

$\sqrt{4x - 7} = 5$

4x - 7 = 25

4x = 32

x = 8