Question

Use the difference of two squares to find the product of 22 and 18.

Answer 1

22*18=396

=(20+2)(20-2)

=20²- 2² ....Ans.

=396

Answer 2

$22\times 18=396$

Step-by-step explanation:

To find : Use the difference of two squares to find the product of 22 and 18 ?

Solution :

The product is written as,

$22\times 18$

Re-write the terms as,

$22\times 18=(20+2)(20-2)$

Applying algebraic identity, $(a+b)(a-b)=a^2-b^2$

$22\times 18=20^2-2^2$

$22\times 18=400-4$

$22\times 18=396$

Therefore, $22\times 18=396$

#Learn more

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