Question

(x-2)totul la puterea 4= 9 la a 2

Answer 1

(x-2)^4=81
x-2=3=>x=5

Answer 2

$(x-2)^4=9^2$

$\sqrt{(x-2)^4}=\sqrt{9^2}$

$(x-2)^2=9$

$\sqrt{(x-2)^2}=\sqrt{9}$

$x-2=3$

$x=5$