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9.2: X the Unknown

Difficulty Level: At Grade Created by: CK-12
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The Unknown – Solve for Unknowns using the Distributive Property

Teacher Notes

Students apply the distributive property and the rule for order of operations to solve equations involving unknowns. In all problems, students have to find square roots of values. All roots are the positive roots of square numbers. Be sure that students show all computational steps.

Solutions:

The Unknown 1

The Unknown 2

The Unknown 3

What is the value of ?

Solve for the value of .

Show all steps.

Extra for Experts: the Unknown – Solve for Unknowns using the Distributive Property

Solve for the value of .

Show all steps.

Solutions:

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CK.MAT.ENG.SE.1.Algebra-Explorations-K-7.9.2