Aptitude Topics
Square Root Basics
The square root of a number $x$ is a value $y$ such that $y^2 = x$. It represents the side length of a square with an area of $x$.
Essential Formulation Tips
- The symbol for the principal (positive) square root is $\sqrt{x}$.
- Every positive real number has two square roots: one positive and one negative.
Example Breakdown:
Problem QueryFind $\sqrt{144}$.
Step-By-Step Solution Path
We look for a number that, when multiplied by itself, equals 144.
$12 \times 12 = 144$.
Therefore, $\sqrt{144} = 12$.
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