Question

a(a-4)-a+4 factorise this plz
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Answer 1

Answer:

(a-4) (a-1)

Step-by-step explanation:

factorize by taking commons.

Answer 2

$\to \bf{}a(a-4)-a+4 \\ \small \boxed{ \rm{taking \: \: (- ) \: \: common}} \\ \to \bf{}a(a - 4) - (a - 4) \\ \small \boxed{ \rm{taking \: \: (a - 4) \: \: common}} \\ \to \bf{a - 4 \{a - 1 \}} \\ \to \red{\bf{( a- 4)(a - 1)}}$