Question

$<var>daca f:(-\infty, 0) ->R </var><var>si \sqrt{(m-3)x^{2}-2(2m-5)x+m-3 </var>$

cum se aleg delta si a?

Answer 1

[tex]a=m-3\\ b=-2(2m-5)\\ c=m-3\\ \triangle=b^2-4ac=4(4m^2-20m+25)-4(m^2-6m+9)\\ \triangle=16m^2-80m+100-4m^2+24m-36\\ \triangle=12m^2-56m+64[/tex]