Use Descartes' Rule of Signs to determine the possible numbers of positive and negative real zeros.
$q(x)=-4 x^4+2 x^3-9 x^2+3 x+7$
If there is more than one possibility, separate them with commas.
APossible number(s) of positive real zeros:
BPossible number(s) of negative real zeros:
$q(x)=-4 x^4+2 x^3-9 x^2+3 x+7$
If there is more than one possibility, separate them with commas.
APossible number(s) of positive real zeros:
BPossible number(s) of negative real zeros: