# Simplify Square Roots: sqrt(a^2), -sqrt(a^2), sqrt(-a^2)

This video explains how to simplify square roots using real numbers.

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# Evaluate a Variable Expression x^2+y^3-z (Integers)

This video explains how to evaluate a variable expression using integers.

# Evaluate a Variable Expression y^3-y^2 (Whole Numbers)

This video explains how to evaluate a variable expression using whole numbers.

# Evaluate a Variable Expression a(bx-c)^2-9d (Whole Numbers)

This video explains how to evaluate a variable expression using whole numbers.

# Evaluate a Variable Expression: b^2-4ac (Integers – Neg Result)

This video explains how to evaluate a variable expression in the form of a discriminant.

# Evaluate a Variable Expression: b^2-4ac (Integers – Pos Result)

This video explains how to evaluate a variable expression in the form of a discriminant.

# Evaluate a Variable Expression: b^2-4ac (Whole Numbers)

This video explains how to evaluate a variable expression in the form of a discriminant.