Question

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

Answer:

(i)4/5

(ii)9/10

Step-by-step explanation:

x+1=6

x=6-1=5

(i) x-1/x

=5-1/5

=4/5

(ii) 2x-1/2x

=2(5)-1/2(5)

=10-1/10

=9/10

Answer 2

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