The value of f(x) = –x² – 4 at x =-3 is -13 .
It is an algebraic equation of the second degree in x.
The quadratic equation in its standard form is ax² + bx + c = 0, where a and b are the coefficients, x is the variable, and c is the constant term
The given equation is
f(x) = –x² – 4
Putting the value of x = -3 in the above equation
f(x) = -(-3)² -4
f(x) = -9 - 4
f(x) = -13
Therefore the value of f(x) = –x² – 4 at x =-3 is -13 .
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