Question

x - 9 = 1 what is x ?

Answer 1

Answer:

To factorize

x

9

−

1

, we can use the identity

a

3

−

b

3

=

(

a

−

b

)

(

a

2

+

a

b

+

b

2

)

.

Hence

x

9

−

1

=

(

x

3

)

3

−

1

3

=

(

x

3

−

1

)

(

x

6

+

x

3

+

1

)

factorizing

x

3

−

1

further

x

9

−

1

=

(

x

3

−

1

)

(

x

6

+

x

3

+

1

)

=

(

x

−

1

)

(

x

2

+

x

+

1

)

(

x

6

+

x

3

+

1

)

Answer 2

X = 3, -3

Multiply the numerator of the first fraction by the denominator of the second fraction. Set this equal to the product of the denominator of the first fraction and the numerator of the second fraction.

(Not sure if this is the answer you’re looking for)