Question

What is the Square of 87

Answer 1

Square of 87.

Here is your perfect answer,

87² = (90-3)²

= 90² + 3² - 2*90*3

= 8100 + 9 - 540

= 7569.

Answer 2

Question :

→ What is the Square of 87 ?

Answer:

→ The square of 87 is 7569 .

Step-by-step explanation:

Given :-

→ The number whose square to be find = 87 .

To find :-

→ The square of 87 i.e., (87)² .

Solution :-

We have ,

= (87)² .

We can write this as :

= 87 × 87 .

= 7569 .

Now, verification :

We can write 87 as = ( 100 - 13 ) .

Now, using identity :

∵ ( a - b )² = a² - 2ab + b² .

⇒ ( 100 - 13 )² = (100)² - 2 × 100 × 13 + (13)² .

⇒ (87)² = 10000 - 2600 + 169 .

⇒ (87)² = 10169 - 2600 .

∴ (87)² = 7569 .

Hence, it is solved .

THANKS .