If the quadratic equation of one variable x + PX + q = 0 is negative, then () A.P > 0 and Q > 0 B.P > 0 and c.0 and Q > 0 D.P

If the quadratic equation of one variable x + PX + q = 0 is negative, then () A.P > 0 and Q > 0 B.P > 0 and c.0 and Q > 0 D.P

Two roots are both negative. According to Weida's theorem, they must be negative
x1+x20
And, X1 + x2 = - P
x1x2=q
∴p>0,q>0
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