Factorise :
${{(405)}^{2} - {(395)}^{2}}$

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Solution

Using $a^{2} - b^{2} = (a + b) (a - b)$
$\Rightarrow {{(405)}^{2} - {(395)}^{2}} = (405 + 395) (405 - 395)$
$= (800) \times (10) .$
Hence, the answer is $(800) \times (10) .$

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Similar questions

Evaluate : ${(405)^{2} - (395)^{2}}$

If h is the hcf of 4052 and 12576 and h= 4052*a+12576*b find the value of h+a+b

Use Euclid’s algorithm to find the HCF of 4052 and 12576.

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