Factorise the expression completely (a+3)^2-9
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Step-by-step explanation:
(a+3)^2 -9
=> (a+3)^2 -3^2
=> (a+6)(a)
=> a^2 + 6a
Formula used is a^2 - b^2= (a+b)(a-b)
Answered by
1
Answer:
a (a+6)
Step-by-step explanation:
(a+3)^2-9
formula
(a+b)^2= a^2+b^2+2ab
a^2+3^2+(2a3)-9=0
a^2+9+6a-9=0
a^2+6a=0
a (a+6)=0
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