Question

factorise (7l^2-35l+28) (4l+16)/(7l^2-112)

Answer 1

Answer:

4x−4

Step-by-step explanation:

(7x2−35x+28)(4x+16)

7x2−112

=

28x3−28x2−448x+448

7x2−112

=

4x3−4x2−64x+64

x2−16

=

4(x−1)(x+4)(x−4)

(x+4)(x−4)

=4x−4