Question

Using suitable identity find the value of 7.2​

Answer 1

Answer:

Using (a+b)

2

= a

2

+2ab+b

2

To Find value of (7.2)

2

Divding (7.2)

2

into parts = (7+0.2)

2

and applying formula as below

⇒ 7

2

+2(7)(0.2)+0.2

2

⇒ 49+2.8+0.04

⇒ Final Solution;-

51.84