Question

(a2 – a) (4a2 - 4a – 5) – 6​

Answer 1

Answer:

Explanation:

(a  

2

−a)(4a  

2

−4a−5)−6

=(a  

2

−a)[4(a  

2

−a)−5]−6

Let (a  

2

−a)=x

Thus,

  x(4x−5)−6

=4x  

2

−5x−6

=4x  

2

−8x+3x−6

=4x(x−2)+3(x−2)

=(x−2)(4x+3)

Putting the value of x  

=(a  

2

−a−2)[4(a  

2

−a)+3]

=(a  

2

−2a+a−2)(4a  

2

−4a+3)

=(a(a−2)+1(a−2))(4a  

2

−4a+3)

=(a−2)(a+1)(4a  

2  −4a+3)