Question

Find the value of 399²-398²​

Answer 1

Step-by-step explanation:

hope this answer helps you...

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Answer 2

Answer:

Step-by-step explanation:

Using algebraic identity:

$x^{2} -y^{2} = (x + y) (x - y)$

here x = 399 and y = 398

then, (399 + 398)(399 - 398)

= 797*1

= 797 is your required answer