Question

Using identities , evaluate .

(i) 71^2

pls write the correct answer

Answer 1

Answer:

71x71 is the answer

Step-by-step explanation:

71x71

Answer 2

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${\fcolorbox{black}{aqua}{1st~Method}}$

$\longrightarrow \: {(71)}^{2} \\ \\ \implies \: {(100 - 29)}^{2} \\ \\ \implies \: {100}^{2} + {29}^{2} - 2 \times 100 \times 29 \\ \\ \implies \: 10000 + 841 - 5800 \\ \\ \implies \: 10841 - 5800 \\ \\ \implies \: 5041$

${\fcolorbox{cyan}{aqua}{2nd~Method}}$

$\longrightarrow {71}^{2} \\ \\ \implies \: {(50 + 21)}^{2} \\ \\ \implies \: {50}^{2} + {21}^{2} + 2 \times 50 \times 21 \\ \\ \implies \: 2500 + 441 + 2100 \\ \\ \implies5041$