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1. Find all roots: f(x)=x²-x+4

1. Find all roots: f(x)=x²-x+4

Calculus: Early Transcendentals
Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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Answer questions 1-6
1. Find all roots: f(x)=x²-x+4 2. Find the zeros of each function f(x)=x²2 +7 3. Multiply: (-2-7)(-2+71) f(x)=x²-4 f(x) = 9x² +1 4. Which of the following quadratic functions have roots at x=3 and x=-2? Choose all that apply. (A) f(x) = 4(x + 2)(x-3) (B) g(x) = (x-3)² - 2 (C) h(x)=x²-x-6 (D) j(x) = (x+3)(x - 2) 5. We know 6+ i and 4-√3 are roots of a 4th degree polynomial. Find the remaining roots. 6. For i = √-1, what is the sum (7+3i) + (−8+9i)? (A) -1 + 12i (B)-1-6i (C) 15 + 12i (D) 15 - 6i
Transcribed Image Text:1. Find all roots: f(x)=x²-x+4 2. Find the zeros of each function f(x)=x²2 +7 3. Multiply: (-2-7)(-2+71) f(x)=x²-4 f(x) = 9x² +1 4. Which of the following quadratic functions have roots at x=3 and x=-2? Choose all that apply. (A) f(x) = 4(x + 2)(x-3) (B) g(x) = (x-3)² - 2 (C) h(x)=x²-x-6 (D) j(x) = (x+3)(x - 2) 5. We know 6+ i and 4-√3 are roots of a 4th degree polynomial. Find the remaining roots. 6. For i = √-1, what is the sum (7+3i) + (−8+9i)? (A) -1 + 12i (B)-1-6i (C) 15 + 12i (D) 15 - 6i
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