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a fost răspuns

Restrangeti: a)x^2+2√3x+3
b)x^2-2√5x+5
c) 7x^2-4√7x+4
d)2x^2+6√2x+9
e)x^2+2/3x+1/9
f)x^2-1/2x+1/16
g)x^2/9+4/21x+4/49
h)x^2/16-3/2x+9/25
Folosiți formulele de la calcul cu prescurtari

Răspuns :

A) (x+√3)^2

B) (x-√5)^2

C) (√7 x-2)^2

D) (√2 x+3)^2

E) (x+1/3)^2

F) (x-1/4)^2

G) (x/3+2/7)^2

H) (x/4-3/5)^2

Am folosit formulele: ->a^2+2ab+b^2=(a+b)^2 ->a^2-2ab+b^2=(a-b) ^2

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