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Rauulmuresan1
a fost răspuns

DEscompuneti in factori , folosind formulele pentru patratul unei sume sau al unei diferente :
a) 9x²+24xy+16y²;
b) 121-22xy+x²y²;
c)100x²-60x+9;
d) 36x²-60xy+25y²;
e) 49a²+28ab+4b²

Răspuns :

a) (3x+4)^2
b) (11-xy)^2
c) (10+3)^2
d) (6x-5y)^2
e) (7a+2b)^2
JohnAndrew
a)[tex]9x^2+24xy+16y^2=(3x+4y)^2 [/tex]
b)[tex]121-22xy+x^2y^2=(11-xy)^2[/tex]
c)[tex]100x^2-60x+9=(10x-3)^2 [/tex]
d)[tex]36x^2-60xy+25y^2=(6x-5y)^2[/tex]
e)[tex]49a^2+28ab+4b^2=(7a+2b)^2[/tex]