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2014-04-16T18:56:41+03:00
X²+2x-3x-6-x²+6x-9>15x-10
5x-15>15x-10
5x-15x>-10+15
-10x>5
x>-1/2
2 3 2
2014-04-16T18:59:17+03:00
=x²+2x-3x-6-x²+6x-9>15x-10
=5x-15>15x-10
⇒5x-15x>-10+15⇒
-10x>5   inmultim cu -1
x<5/10
x<1/2
x∈(-α, 1/2)