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Khan Academy (English - US curriculum)
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Khan Academy (English - US curriculum)
Math by grade
Eureka Math/EngageNY
Algebra 1 (Eureka Math/EngageNY)
Module 1: Relationships between quantities and reasoning with equations and their graphs
Topic B: Lesson 8: Adding and subtracting polynomials
Evaluating polynomials
Evaluating polynomials
Evaluating 3x²-8x+7 when x=-2.
License: CC BY-NC-SA by Khan Academy