Question

Vreau rezolvarea la ex 6. Ca exemplul de mai jos

Answer 1

6.

a)x^2 = 9•16 =>x=3•4=12 sau x=(-12)

x^2/100 = 1/64 =>x^2 = 100/64 =>x=10/8 sau x=(-10/8)

x^2/25 = 49/100 =>x^2 = (25•49)/100 =>x^2 = 49/4 =>x = 7/2 sau x = (-7/2)

b)x^2 = 3/2 =>x = rad3/rad2 = rad6/2 sau x = (-rad6/2)

x^2 = 7/3 =>x = rad7/rad3 = rad21/3 sau x = (-rad21/3)

x^2 = 11/4 =>x = rad11/2 sau x = (-rad11/2)

c)9x^2 = 10 =>x^2 = 10/9 =>x = rad10/3 sau x = (-rad10/3)

25x^2 = 32 =>x^2 = 32/25 =>x = 4rad2/5 sau x = (-4rad2/5)

49x^2 = 24 =>x^2 = 24/49 =>x = 2rad6/7 sau x = (-2rad6/7)

d)4x^2 = 1/2 =>x^2 = 1/8 =>x = 1/2rad2 = rad2/4 sau x = (-rad2/4)

x^2 = 25/144 =>x = 5/12 sau x = (-5/12)

3x^2 = 1/3 =>x^2 = 1/9 =>x = 1/3 sau x = (-1/3)