Question

Urgent
Please help!
Factorise

Answer 1

a) (x-1) (x+4)
b) (x-3)(x+1)
c) (x-2) (x+4)

Answer 2

a.

x²+3x-4

doing middle term factorization

x²+(4-1)x-4

x²+4x-x-4

x(x+4)-1(x+4)

( x+4)(x-1)

b.

x²-2x-3

x²-3x-x-3

x(x-3)-1(x-3)

(x-3)(x-1)

c.

x²+2x-8

x²+4x-2x-8

x(x+4)-2(x+4)

(x+4)(x-2)