Question

Factorise the following:

5a – b + x(b – 5a)

Answer 1

5a – b + x · (b – 5a)

Factor out the negative sign from the expression

– (b – 5a) + x · (b – 5a)

Factor out – (b – 5a) from the expression

– (b – 5a) · (1 – x)