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N-CN.9 Warmup M2-059-A02-V02

Know the Fundamental Theorem of Algebra and verify it for quadratic polynomials.

Verify whether a given real or complex number is a root of a quadratic by substitution

Problem

Use substitution to determine whether \(3i\) is a root of \(x^2+9\).

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Four variants of this problem type
Curriculum context
Course
Math II
Standard
N-CN.9
Category
Number and Quantity
Domain
The Complex Number System
Objective
Know the Fundamental Theorem of Algebra and verify it for quadratic polynomials.
Problem type
Verify whether a given real or complex number is a root of a quadratic by substitution