Rewrite f(x) = -(x + 3)2 - 1 from vertex form to standard form.
Solution:
The vertex form of a quadratic function is given by f (x) = a(x - h)2 + k,
Where (h, k) is the vertex of the parabola where a, h and k are real numbers and a ≠ 0.
Quadratic function in standard form is written in the form, f (x) = ax2 + bx + c,
Where a, b and c are real numbers (constants) where a ≠ 0 and x and y are variables where (x, y) represents a point on the parabola.
Given that: f(x) = -(x + 3)2 - 1 ,
Expanding the terms using the identity (a + b)2 = a2 + b2 + 2ab,
f(x) = -x2 - 6x - 9 - 1
f(x) = -x2 - 6x - 10
Rewrite f(x) = -(x + 3)2 - 1 from vertex form to standard form.
Summary:
The standard form of f(x) = -(x + 3)2 - 1 is f(x) = -x2 - 6x - 10.
Math worksheets and
visual curriculum
visual curriculum