Skip to main content
Ch. R - Algebra Review
Lial - Trigonometry 12th Edition
Lial12th EditionTrigonometryISBN: 9780136552161Not the one you use?Change textbook
Chapter 1, Problem 9

CONCEPT PREVIEW Perform the operations mentally, and write the answers without doing intermediate steps. √6 • √6

Verified step by step guidance
1
Recall the property of square roots that states: \(\sqrt{a} \times \sqrt{a} = a\) for any positive number \(a\).
Apply this property to the given expression \(\sqrt{6} \times \sqrt{6}\).
Since both square roots are of the same number 6, multiply them directly using the property: \(\sqrt{6} \times \sqrt{6} = 6\).
Understand that this operation simplifies the expression by removing the square root, leaving just the number inside.
Therefore, the result of \(\sqrt{6} \times \sqrt{6}\) is simply 6.

Verified video answer for a similar problem:

This video solution was recommended by our tutors as helpful for the problem above.
Video duration:
2m
Was this helpful?

Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Square Roots and Radicals

A square root of a number is a value that, when multiplied by itself, gives the original number. The symbol √ denotes the square root. Understanding how to manipulate square roots is essential for simplifying expressions involving radicals.
Recommended video:
2:20
Imaginary Roots with the Square Root Property

Multiplication of Radicals

When multiplying two square roots, you can multiply the numbers inside the radicals directly: √a × √b = √(a × b). This property allows simplification of expressions without expanding intermediate steps.
Recommended video:
04:39
45-45-90 Triangles

Simplification of Radical Expressions

Simplifying radicals involves reducing the expression to its simplest form, often by recognizing perfect squares. For example, √6 × √6 equals √(6×6) = √36, which simplifies to 6, a whole number.
Recommended video:
6:36
Simplifying Trig Expressions