Question

a^3b-a^2b+5ab-5b factorise it

Answer 1

we have to factorise the expression,

a³b - a²b + 5ab - 5b

solution : a³b - a²b + 5ab- 5b

= a²b × a - a²b × 1 + 5b × a - 5b × 1

= a²b(a - 1) + 5b(a - 1)

= (a²b + 5b)(a - 1)

= {a² × b + 5 × b} (a - 1)

= {b(a² + 5)}(a - 1)

= b(a² + 5)(a - 1)

Therefore the factorisation of a³b - a²b + 5ab - 5b is b(a² + 5)(a -1).

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Answer 2

Answer:

=a^2b(a-1)+5b(a-1)

(a^2b+5b)(a-1)

b(a^2+5)(a-1) Ans.