Question

(x^2-3x-1)(×^2-3x+1)​

Answer 1

Answer:

take x2 - 3x = m

( m-1 )(m +1 )

(m- 1)2

m2 - 2m +1

m2 -m - m + 1 = 0

m(m - 1 ) - 1 ( m- 1)

m-1 =0 or m- 1 =0

hence

m= 1

putting m= x2 - 3x

x2 - 3x = 1

x2 - 3x - 1 = 0

a= 1 b = -3 c = -1

b2 - 4ac

(-3 )2 - 4×1×-1

9 + 4

13

now

by using formula method

x= -b +- in root b2-4ac / 2a

3 +- in root 13 / 2× 1

3 +- in root 13 /2

3+ in root 13 / 2

or

3- in root 13 / 2