Question

$\sqrt{ (\frac{ - 1}{2} - 4) {}^{2} }$
pls help trebuie urgent răspunsul ​

Answer 1

Răspuns:

Explicație pas cu pas:

Metoda 1:

= rad((-9/2)^2) =

I -9/2 I = 9/2 =

4 1/2.

sau

Metoda 2:

= rad((-9/2)^2) =

rad(81/4) =

9/2 =

4 1/2.

Answer 2

$\it \sqrt{\Big(\dfrac{-1}{2}-4\Big)^2}=\sqrt{\Big(-\dfrac{9}{2}\Big)^2}=\sqrt{\dfrac{81}{4}}=\dfrac{9}{2}=4,5$