Question

solve using identity (49) whole square ​

Answer 1

Explanation:

Square Root of 49

add

49 is a perfect square number which can be obtained by a square of 7 and it is also a composite number. Hence, the square root of 49 is a rational number. In this lesson, we will explore the concept of the square root of 49. This lesson also explains the square root of 49 in radical form along with solved examples.

Square Root of 49: √49 = 7

Square of 49: 492 = 2401

What Is the Square Root of 49?

The square root of 49 is obtained by the number whose square gives the original number.

√49 = 7

The answer obtained on squaring 7 is 49. Hence, 49 is a perfect square.

Is Square Root of 49 Rational or Irrational?

A rational number is a number that can be expressed in the form of p/q, where p and q are integers and q is not equal to 0. We already found that √49 = 7. 7 is a whole number and it can be expressed in p/q form easily. The number 7 is a rational number. So, the square root of 49 is a rational number.

Answer 2

Answer:

2401

Explanation:

Using (a-b)^2 = a^2 + b^2 - 2ab

( 50 - 1 )^2 = 50^2 + 1^2 - 2 × 50 × 1

= 2500 + 1 - 100

= 2401

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