Question

Use a suitable identify find the sqare of 499

Answer 1

Answer:

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499^2

=(500-1)^2

=500^2-2.500.1+1^2

=250000-1000+1

=250001-1000

=240001

Step-by-step explanation:

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Answer 2

$\bf{\underline{\underline{Question}}}$

Use a suitable identify find the sqare of 499.

$\bf{\underline{\underline{Solution}}}$

$\bf{(500-1)^{2}}$

$\bf{using \:identity\:(a-b)^{2}}$

$\bf={a^{2}+b^{2}-2ab}$

$\bf={500^{2}+1^{2}-2(500)(1)}$

$\bf={250000+1-1000}$

$\bf={249001}$

$\bf{\underline{\underline{Thanks}}}$