Question

Subtract: 4x x+1 -- x²-1 x-1​

Answer 1

Step-by-step explanation:

x

4

+

x

4

1

=119

Adding 2 on both the sides,

x

4

+

x

4

1

+2=119+2

(x

2

+

x

2

1

)

2

=121⇒x

2

+

x

2

1

=11

Subtracting 2 on both sides.

x

2

+

x

2

1

−2=11−2

(x−

x

1

)

2

=9⇒x−

x

1

=±3

Hence, x−

x

1

=3.