Can so.e one solve this for me I can't solve it – InterviewSolution

1.

Can so.e one solve this for me I can't solve it

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Step-by-step EXPLANATION:

(a+b)(a-b)=

$a^{2} + b^{2} = (a + b)(a - b)$ PUT the formula in the 3RD equation

Example:

$( \sqrt{5} + \sqrt{3} )( \sqrt{5} - \sqrt{3} ) = ( \sqrt{5} )^{2} - (\sqrt{3})^{2} = 5 - 3$

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