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Using identities, evaluate the following: 103x140​

Answer» <html><body><p>(103)(<a href="https://interviewquestions.tuteehub.com/tag/105-266496" style="font-weight:bold;" target="_blank" title="Click to know more about 105">105</a>) ⇒(<a href="https://interviewquestions.tuteehub.com/tag/104-266430" style="font-weight:bold;" target="_blank" title="Click to know more about 104">104</a>+1)(104−1). We know, a  2 −b  2 =(a+b)(a−b). Then, (103)(105) =(104+1)(104−1) =(104)  2 −1  2  =10816−1 =10815. <a href="https://interviewquestions.tuteehub.com/tag/therefore-706901" style="font-weight:bold;" target="_blank" title="Click to know more about THEREFORE">THEREFORE</a>, the required answer is 10815.</p></body></html>


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