Question

14. Using the identity (a - b) = (a? - 2ab + 64),
evaluate the followings.

293 ka square ​

Answer 1

Correct Question:

Using the identity (a - b)² = a² -2ab + b², evaluate (293)².

Solution:

293 can also be written as 300 - 7

Implies,

(300-7)²

Here,

a=300 and b= 7

Using the identity (a-b)²=a² -2ab + b²

→(300)² -2(300)(7) +(7)²

→90000+49-4200

→85,849