1.

--18. If x + 1 = 6, find (i) x-1/X (ii) x2-1/x2​

Answer»

SoluTion :-

X + 1 = 6

x = 6 - 1

x = 5

Now, USING this value,

\sf {(i) \ \frac{x-1}{x}}\\\\\sf {= \frac{5-1}{5}}\\\\\sf {= \frac{4}{5} }

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\sf {(ii) \ \frac{x^{2}-1}{x^{2}}}\\\\\sf {= \frac{5^{2}-1}{5^{2}}}\\\\\sf {= \frac{25-1}{25}}\\\\\sf {= \frac{24}{25}}


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