factorise
a(a-1)-b(b-1)
Answers
Answered by
3
Answer:
(a-b){(a+b)+1}
Step-by-step explanation:
a(a-1)-b(b-1)=a2-a-b2+b=a2-b2-a+b=(a+b)(a-b)-(a-b)=(a-b){(a+b)+1}
Answered by
10
a(a - 1) - b(b - 1)
= a² - a - b² + b
= a² - b² - a + b
= (a - b)(a + b) - a + b
= (a - b)(a + b - 1).
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