Question

(7.5)^2 using identitiy​

Answer 1

Step-by-step explanation:

7.5×7.5

56.25

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Answer 2

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