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Devetak1
a fost răspuns

Va rog frumos sa-mi rezolvati :
a) (x+1)^2=1
b)(x-2)^2=25
c)(x+3)^2=49
Multumesc anticipat.

Răspuns :

a)

(x+1)²=1

x+1=√1

x+1=±1

x+1=1

x+1=-1

x=0

x=-1-1=-2

x=0,-2

b)

(x-2)²=25

x-2=√25

x-2=±5

x-2=5

x-2=-5

x=5+2=7

x=-5+2=-3

x=7,-3

c)

(x+3)²=49

x+3=√49

x+3=±7

x+3=7

x+3=-7

x=7-3=4

x=-7-3=-10

x=4,-10

Alte intrebari