Question

(x+2)²-9=0
(x+4)²-25=25​

Answer 1

Explicație pas cu pas:

${(x + 2)}^{2} - 9 = 0 \\ {(x + 2)}^{2} = 9 \\ x + 2 = \pm 3$

$x + 2 = - 3 \implies x = - 5 \\ x + 2 = 3 \implies x = 1$

.

${(x + 4)}^{2} - 25 = 25 \\ {(x + 4)}^{2} = 50 \\ x + 4 = \pm \sqrt{50}$

$x + 4 = - 5 \sqrt{2} \implies x = - 5 \sqrt{2} - 4 \\ x + 4 = 5 \sqrt{2} \implies x = 5 \sqrt{2} - 4$