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# Form 1 Mathematics: Square and square roots online lessons

Lesson on finding square root of numbers

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Lesson on finding square root of numbers

-Square root is the opposite of a square, for example the square of 5 is 5 x 5 = 25 and the square root of sqrt25 = 5.
-A positive number has two square roots, one positive and one negative.
-Integers whose square roots are whole numbers are called perfect squares.
-The square roots of negative numbers are complex numbers hence cannot be obtained.
Example 1:
Find the square root of 81.

Example 2
Find sqrt 1764

Example 3.
Find sqrt 441

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