Question

Using the identities for difference of two squares find the values of: i)18×22​

Answer 1

Answer:

18×22=(20-2)(20+2)=20^2-2^2=400-4=396

84^2-76^2= (84-76)(84+76)= 8×160= 1280

Step-by-step explanation:

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Answer 2

✯ Given:

• 18 × 22

✯ To Find:

• Value of 18 × 22 using the identities for difference of two squares

✯ Solution:

❂ 18 × 22  can be witten as

→  (20 - 2 )(20 + 2)

= $20^{2} -2^{2}$

= 400 - 4

= 396

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❂ 396 is the required answer