aj0753771027
aj0753771027
13-03-2015
Mathematics
contestada
Factoriza 4x²-y²-6y-9
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Since3122015
Since3122015
13-03-2015
[tex]4 x^{2} -y^{2} -6y-9 \\ 4 x^{2} = y^{2} +6y+9 \\ 4 x^{2} =(y+3)(y+3) \\ \sqrt{ 4x^{2} } = \sqrt{(y+3)(y+3)} =\\2x=y+3\\2x-3=y[/tex]
y=2x-3
Answer Link
Аноним
Аноним
13-03-2015
=4x²-(y²+6y+9)
=(2x)²-(y+3)²
=(2x+y+3)*(2x-y-3)
Answer Link
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