Which expression is equivalent to 9^-2? O-81 O-18 O1/81 O1/18
1 answer:
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Answer:
Option B is correct.
the value of discriminant is, -7
Step-by-step explanation:
Given the equation:
To find the value of discriminant
A quadratic equation is of the form where a, b and c are coefficient of the equation.
On comparing with given equation we have;
a = 1 , b = 1 and c = 2
then;
Discriminant =
Therefore, the value of discriminant is, -7