Question

Va rog frumos! Nu ne-a explicat profesorul.
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Answer 1

X^2=16/25=>x=rad16/rad25=4/5

Rad->radical

B) x=5/6

C)x=7/4

D)x=8/9

Answer 2

Răspuns:

Explicație pas cu pas:

a) x² = 16/25

x² = 4²/5²

x² = (4/5)²

x = 4/5

b ) x² = 25 / 36

x² = 5²/6²

x² = (5/6)²

x=5/6

c ) x² = 49/16

x² = 7²/4²

x² = (7/4)²

x=7/4

d) x² = 64/81

x² = 8²/9²

x² =( 8/9) ²

x = 8/9