Question

simplify (2√2+1) * (2 √2-1)

Answer 1

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$\large \implies \sf(2 \sqrt{2} + 1)(2 \sqrt{2} - 1)$

$\large\implies \sf4 \sqrt{4} - 2 \sqrt{2} + 2 \sqrt{2} - 1$

$\large\implies \sf8 - 1$

$\large\implies \sf7$

Answer 2

ANSWER:-

➣

$(2 \sqrt{2} + 1)(2 \sqrt{2} - 1)$

${= 4 \sqrt{4} - 2 \sqrt{2} + 2 \sqrt{2} - 1}$

${= 8 - 1}$

${\bf{= 7}}$