Lesson 5.4 Cont.--Completing the Square and Vertex Form Recall the vertex form of a quadratic function from lesson 5-1: f(x) = a(x – h)2 + k, where the vertex is (h, k). You can complete the square to rewrite any quadratic function in vertex form. Example: Write the function in vertex form, and identify its vertex. f(x) = x2 + 16x – 12 g(x) = 3x2 – 18x + 7 . 1 Example: Write the function in vertex form, and identify its vertex f(x) = x2 + 24x + 145 g(x) = 5x2 – 50x + 128 Lesson Quiz Write each function in vertex form and identify its vertex. f(x)= x2 + 6x – 7 f(x) = 2x2 – 12x – 27 HW: p. 345 32, 34, 36, 37, 39, 50, 64(skip b), 6670 even (set equal to zero then put in calculator), 73, 77, 8696 = 21 problems 2

© Copyright 2024 Paperzz