Question

$if x = 3 - 2 \sqrt[]{2 \: \: } find \: the \: value \: of \: x {}^{2} - 1 \div x {}^{2}$
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Answer 1

Answer:

${\green{\overbrace{\underbrace{\bf{\red { Solution : }}}}}}$

value of $x = 3 - 2\sqrt{2}$

$x &#8658 3 - 2\sqrt{2}$

$x &#8658 1\sqrt{2}$

value of ${x}^{2} = 1{\sqrt{2}}^{2}$

${x}^{2} = 1{\sqrt{2}}^{2}$

$&#8658{x}^{2} = 1\sqrt{2 × 2}$

$&#8658{x}^{2} = 1 × 2$

$&#8658{x}^{2} = 2$

value of ${x}^{2} ÷ {x}^{2}$

${x}^{2} ÷ {x}^{2}$

$&#8658 2 ÷ 2$

$&#8658 1$

${\green{\underline{\underline{\bf { Answer : 2}}}}}$