Question

Solve:19 ² - 18 ² using identity

Answer 1

Answer:

37

Step-by-step explanation:

This can be solved using the identity a² - b² as follows-

a²- b² = (a+b) (a-b)

let 19 be "a"

and let 18 be "b"

Therefore,

19² - 18² =

(19+18) (19-18)

⇒ (37) (1)

= 37