Question

compute square of 7¾ using identity with numbers ​

Answer 1

Answer:

60 1/16.

Step-by-step explanation:

Use the identity

(a + b)^2 = a^2 + 2ab + b^2.

(7 3/4)^2

= (7 + 3/4)^2

= 49 + 2*7(3/4) + (3/4)^2

= 49 + 21/2 + 9/16

= 49 +  168/16 + 9/16

= 49 + 177/16

= 49 + 11 1/16

= 60 1/16.