Question

resolva ( x – 7 )² = 49

Answer 1

Explicação passo-a-passo:

$\sf (x-7)^2=49$

$\sf x-7=\pm\sqrt{49}$

• $\sf x-7=7$

$\sf x=7+7$

$\sf x'=14$

• $\sf x-7=-7$

$\sf x=-7+7$

$\sf x"=0$

$\sf S=\{0,14\}$

Answer 2

Resposta:

x"=0 x"=14 Ajudeeeeeeee