Introductory Algebra Glossary

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# Introductory Algebra Glossary - PowerPoint PPT Presentation

Introductory Algebra Glossary. Chapter Nine. square root . The opposite of squaring a number is called taking its square root; that is, a number b is the square root of a if b 2 = a. . radicand . The number or expression under a radical sign. . radical .

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### Introductory AlgebraGlossary

Chapter Nine

square root
• The opposite of squaring a number is called taking its square root;
• that is, a number b is the square root of a if b2 = a.
• The number or expression under a radical sign.
• An algebraic expression that contains radicals.
perfect square
• A number with a rational square root.
cube root
• A number b is the cube root of a if b3 = a.
fourth root
• A number b is the fourth root of a if b4 = a.
index (order)
• In a radical of the form, the nth root, n is called the index or order.
perfect cube
• A number with a rational cube root.