Use the function f (x) = 5-12x-2x2. Find the following. Hint: Is this in standard form? 5) a) Vertex, written as an ordered pair, Show algebraic steps for how you got it! b) x-intercept(s). These must be exact values, not approximations! Hint: this does't have a nice factorization. Use the quadratic formula, show your work! -b + Vb2 – 4ac 2a c) y-intercept(s)

Use the function f (x) = 5-12x-2x2. Find the following. Hint: Is this in standard form? 5) a) Vertex, written as an ordered pair, Show algebraic steps for how you got it! b) x-intercept(s). These must be exact values, not approximations! Hint: this does't have a nice factorization. Use the quadratic formula, show your work! -b + Vb2 – 4ac 2a c) y-intercept(s)

College Algebra (MindTap Course List)

12th Edition

ISBN:9781305652231

Author:R. David Gustafson, Jeff Hughes

Publisher:R. David Gustafson, Jeff Hughes

Chapter4: Polynomial And Rational Functions

Section4.1: Quadratic Functions

Problem 105E

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Find the maximum or minimum value of the quadratic function f(x)=x28x+12.
In the following exercises, solve. Round answers to the nearest tenth. 287. A land owner is planning to build a fenced in rectangular patio behind his garage, using his garage as one of the "walls." He wants to maximize the area using 80 feet of fencing. The quadratic function A(x)=x(802x) gives the area of the patio, where x is the width of one side. Find the maximum area of the patio.

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