Question

factorise a(a+c)-b(b+c)​

Answer 1

Answer:

Formula used:

a² - b² = (a+b)(a-b)

Step-by-step explanation:

a(a+c)-b(b+c)

=a² + ac - b² - bc

= a² - b² + ac - bc

= (a+b)(a-b) + c(a-b)

= (a-b)(a+b+c)

Answer 2

Answer:

a^2-b^2+bc+ac

Step-by-step explanation:

=a^2+ac-b^2+bc

=a^2-b^2+bc+ac

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