Question

Recall that a rational number is expressed as a fraction or decimal.
Every terminating or non-terminating repeating decimal represents a rational
number. A square root of a number is a number when multiplied to itself will
give you the original number. For example, the square root of 9 are +3 and -3
because when +3 and 3 are multiplied to themselves, they are equal to 9. If the
square root of a number is nonterminating, non-repeating decimal, we say that
it is an irrational number.
Every positive number has two square roots, one is positive and the
other is negative. The principal square root is the positive square root of the
given number or radicand. The principal root is rational if the radicand is a
perfect square. If not, then the principal square root is irrational. Zero has only
one square root, which is zero. In addition, negative numbers do not have real
square roots. Their square roots are called imaginary numbers, which are
tackled in a higher branch of Mathematics.
Square roots are the numbers that, when multiplied by themselves,
equal to the number under the square root sign, the radicand. If the principal
square root is irrational, the best you can do is to give an estimate of its value.
Iliustrative Example 1. Find the principal root of 49
Solution: 49 = 37 This means that the square root of 49 is either 7 or -7
because 7 x 7 = 49 and (-7)(-7) = 49.
Thus, 49 has a principal square root of 7 and it is rational.
PNOTA CATARATON​

Answer 1

Answer:

Thanks for giving more information about a rational number....

Step-by-step explanation:

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Answer 2

Answer:

thnks for info dearmate...