Question

What is the discriminant of the polynomial below? 2x^2+3x-7

Answer 1

Answer:

Option C. $65$

Step-by-step explanation:

we know that

The discriminant of a quadratic equation of the form $ax^{2} +bx+c=0$ is equal to

$D=b^{2}-4ac$

in this problem we have

$2x^{2} +3x-7$  

so

$a=2\\b=3\\c=-7$

substitute

$D=3^{2}-4(2)*(-7)$

$D=9+56$

$D=65$