Factorise the following by grouping method :
a(a-4)-a+4
Answers
Answered by
6
a(a-4) -a+4
→ a² - 4a - a + 4
→ a² - a - 4a + 4
→ a(a-1) - 4(a-1)
→ (a-4)(a-1)
Hope it helps
Answered by
3
Answer:
a(a-4)-a+4
a²-4a -a +4
a(a-4)-1(a-4)
(a-4)(a-1)
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