what is the value of the discriminant for the quadratic equation 0 = x + 2 + x²? discriminant = b² - 4ac -9…
what is the value of the discriminant for the quadratic equation 0 = x + 2 + x²? discriminant = b² - 4ac -9 -7 7 9
Answer
Explanation:
Step1: Rewrite equation in standard form
The standard form of a quadratic equation is $ax^{2}+bx + c=0$. So, $x^{2}+x + 2=0$, where $a = 1$, $b=1$, and $c = 2$.
Step2: Calculate the discriminant
Substitute $a = 1$, $b = 1$, and $c=2$ into the discriminant formula $b^{2}-4ac$. We get $1^{2}-4\times1\times2=1 - 8=-7$.
Answer:
-7