mischa wrote the quadratic equation 0=-x²+4x - 7 in standard form. if a = -1, what is the value of c in her…
mischa wrote the quadratic equation 0=-x²+4x - 7 in standard form. if a = -1, what is the value of c in her equation?\no c=-7\no c=-1\no c=4\no c=7
Answer
Explanation:
Step1: Recall quadratic - standard form
The standard form of a quadratic equation is $ax^{2}+bx + c=0$.
Step2: Identify coefficients
The given equation $0=-x^{2}+4x - 7$ can be rewritten as $-1x^{2}+4x-7 = 0$. Comparing with $ax^{2}+bx + c=0$, when $a=-1$, we can see that $c=-7$.
Answer:
A. $c = - 7$