Math, asked by ishan14y, 9 months ago

how it is done? please tell me step by step.

Attachments:

Answers

Answered by raguld

2

Step-by-step explanation:

=√((28^2)-(21^2))

Using (A^2-B^2)= (A+B)(A-B) formula

= √((28+21)(28-21))

= √(49x7)

= 7√7

hope you understood

Previous Question

Next Question

Similar questions

Chemistry, 5 months ago

X is an element which belongs to VA group and 3 period .The oxidation state and name of the elements ...

Math, 5 months ago

15 y - 4-2 [y-9]+(5y + 6 = 0...

Math, 5 months ago

If the diagonals of a quadrilateral bisect each other at right angles, it will be a * Rhombus Trapezium Rectangle Kite Q14: Arpita’s present age is three times of Shilpa's age. If Shilpa’s age three years ago was x. Then Arpita’s present age is * 3(x – 3) 3x + 3 3x – 9 3(x + 3) Q15: Which one is a rational number lying between 1/4 and 1/2. * 3/8 1/5 3/4 None Q16: 9 is subtracted from the...

Science, 9 months ago

give two uses of granite...

Biology, 9 months ago

a previously unknown organism that lacks both a nuclear membrane and mitochondria has just been discovered which of the following what this organism most likely process...

Math, 11 months ago

D/f b/w tributary & distributaries???

Math, 11 months ago

if c={5} find p[p(c)]...

Biology, 11 months ago

fill the empty columns correctly.