Răspunsuri

2014-05-17T12:05:00+03:00
X²-1=(x-1)(x+1)

49x²- 25y²=(7x-5y)(7x+5y)

b²-3=(b-√3)(b+√3)
2014-05-17T12:05:28+03:00

x²-1=(x-1)(x+1)

49x²-25x²=(7x-5x)(7x+5x)

b²-3=(b-√3)(b+√3)

sper ca te-am ajutat

2014-05-17T12:05:32+03:00

x²-1=(x-1)(x+1)

49x²-25x²=(7x-5x)(7x+5x)

b²-3=(b-√3)(b+√3)

sper ca te-am ajutat