Question

Mischa wrote the quadratic equation 0=-x2+4x-7 in standard form. If a = -1, what is the value of c in her equation?

Answer 1

For this case we have that by definition, a quadratic equation in its standard form is given by:

$ax ^ 2 + bx + c = 0$

In this case we have the following equation:

$-x ^ 2 + 4x-7 = 0$

So, according to the standard form we have:

$a = -1\\b = 4\\c = -7$

Answer:

The value of c is -7.

Answer 2

the answer is A.c=-7