Verified answer

Answer:

Step-by-step explanation:

Straight forward way is 18² - 17²  = 324 - 289 = 35.

Option 2:

18² - 17²

This is of form a² - b², we know that a² - b² = (a + b) (a - b)

18² - 17²  = (18 + 17) ( 18 - 17)

             = 35 * 1

              = 35.

(i) (18)² – (17)² = 35

(iv) (31)²-(30)² = 61

(ii) (20)²-(19)² =39

(v) (28)²-(27)² = 55

Answer:

Good Afternoon Angel

Your Answer is

(i)35

(ii)61

(iii)39

(iv)55

Step-by-step explanation:

(i) (18)²-(17)² = 324-289=35

18)²-(17)² = 324-289=35(ii) (31)²-(30)² = 961-900=61

(iii) (20)²-(19)² = 400-361=39

(iv) (28)²-(27)²= 784-729=55

Hope this will help

#Indian's answer