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a fost răspuns

Descompuneti in factori ....folosind formula: a^{2} - b^{2} = (a + b)(a - b)
x^{2} - 9 ;
4 - a^{2};
x^{2} - e6;
X^{2} - 4y^{2};
4x^{2} - 25;
9x^{2} - 100;
9x^{2} - 64;
25a^{2} - 121b^{2};
PLS HEEELP

Răspuns :

x²-9    = (x-3)(x+3) ;
4-a²    = (2-a)(2+a) ;
x²-e⁶   = (x-e³)(x+e³) ;
x²-4y² = (x-2y)(x+2y) ;
4x²-25= (2x-5)(2x+5) ;
9x²-100=(3x-10)(3x+10) ;
9x²-64 = (3x-8)(3x+8) ;
25a²-121b²=(5a-11b)95a+11b) ;

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