Mischa wrote the quadratic equation 0 is equal to negative x squared plus 4 x minus 7 in standard form. If A is equal to negative 1 , what is the value of c in her equation?

A quadratic in standard form is ax² + bx + c = 0, so c is the constant term. In Mischa’s equation, 0 = −x² + 4x − 7, the constant term is −7. Therefore, c is equal to negative 7.

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