Math, asked by binitasharma1975, 1 year ago

Evaluate:
1) 97*98
2) (97) ²

Plz it's urgent
Plz help me.....

Answers

Answered by dna63
1

\textit{\large{\underline{\underline{\pink{Step by step Explanation:-}}}}}

1.)\mathrm{97\times{98}}

\mathrm{=(90+7)(90+8)}

\textit{\underline{Using Identity,,}}

\mathrm{\boxed{\red{(x+a)(x+b)=x^{2}+(a+b)x+ab}}}

\mathrm{=90^{2}+(7+8)90+7\times{8}}

\mathrm{=8100+15\times{90}+56}

\mathrm{=8100+1350+56}

\mathrm{=9506}

2.)\mathrm{(97)^{2}}

\mathrm{=(90+7)^{2}}

\textit{\underline{Using Identity,,}}

\mathrm{\boxed{\red{(a+b)^{2}=a^{2}+2ab+b^{2}}}}

\mathrm{=90^{2}+2\times{90}\times{7}+7^{2}}

\mathrm{=8100+1260+49}

\mathrm{=9409}

❣️❣️✌️✌️Hope it helps you.... please mark it as Brainliest answer... thanks ❣️❣️✌️✌️

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