Question

dau coroana am nevoie urgent​

Answer 1

Răspuns:

Explicație pas cu pas:

(x-1)² = 16; x-1 = ± 4; x-1 = 4 , x-1 = -4; x = 1+4,

x = -4+1; x = 5 , x = -3; x1 = -3 , x2 = 5. - are doua solutii...

Answer 2

$\it (x-1)^2=16 \Rightarrow (x-1)^2=4^2 \Rightarrow \begin{cases} \it (x-1)^2=(-3-1)^2 \Rightarrow x_1=-3\\ \\ \it(x-1)^2=(5-1)^2 \Rightarrow x_2=5\end{cases}$