Question

find the squares of the following number 21/25​

Answer 1

Answer:

1:

${21}^{2} = 441$

2:

${25}^{2} = 625$

Answer 2

$(\dfrac{21}{25})^{2}=\dfrac{441}{625}$

Tips:

In order to find the square of any number a, we must know that a × a = a², that is, the required square number is found by multiplying the number twice.

Also, $(\dfrac{a}{b})^{m}=\dfrac{a^{m}}{b^{m}}$, where m is a Rational Number.

Step-by-step explanation:

Here, 21² = 21 × 21 = 441 and

25² = 25 × 25 = 625

Now, $(\dfrac{21}{25})^{2}$

= $\dfrac{(21)^{2}}{(25)^{2}}$

= $\dfrac{441}{625}$

#SPJ3