Răspuns :

HawkEyedid

Răspuns:

a.

√(-2x+1) = 5

√(-2x+1)² = 5²

- 2x + 1 = 25

- 2x = 25 - 1

-2x = 24

x = 24 : (-2)

x = - 12

b.

√(x+1) = 1

√(x+1)² = 1²

x + 1 = 1

x = 1 - 1

x = 0  

c.

√(2 - x) = - 3   ecuatia nu are solutii

d.

√(2x-1) = 7

√(2x-1)² = 7²

2x - 1 = 49

2x = 49 + 1

2x = 50

x = 50 : 2

x = 25

e.

√(x+6) = 12

√(x+6)² = 12²

x + 6 = 144

x = 144 - 6

x = 138

f.

√(x-13) = 1

√(x-13)² = 1²

x - 13 = 1

x = 1 + 13

x = 14

#copaceibrainly

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