Question

1.x la puterea a doua plus y la a doua plus 2xy minus z la a doua
2.x la a doua plus 3x-4
3. x la a doua plus 6x plus 8
Ajutoor !

Answer 1

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Answer 2

1.$x^{2} + y^{2} +2zy- z^{2} =( x+y)^{2}- z^{2} =(x+y-z)(x+y+z)$
2.$x^{2} +3x-4= x^{2} -x+4x-4=x(x-1)+4(x-1)=(x-1)(x+4)$