Odpowiedzi

2010-04-07T16:10:00+02:00
16-4x²-x=(2-2x)(2+2x)
16-4x²-x=4-4x²
-x=-16+4
-x=-12/:(-1)
x=12
2010-04-07T16:10:11+02:00
16-4x²-x=(2-2x)(2+2x)
16-4x²-x=4-4x²
-x=-16+4
-x=-12/:(-1)
x=12
2010-04-07T16:11:25+02:00
16 - 4x^2 - x = (2-2x)(2x+2)
16-4x²-x = -(2x-2)(2x+2)
16-4x²-x = -(4x²-4)
-4x²-x = -4x²+4-16
-4x²+4x²-x = -12
-x = -12 |*(-1)
x = 12