Factorise :
4a² + 12a + 9
Answers
Answered by
90
4a² + 12a + 9
4a² + 6a + 6a+ 9
2a(2a + 3) +3(2a + 3)
(2a + 3) (2a + 3)
a = -3/2
Answered by
3
Answer:
4a^2 + 12a +9
= 4a^2 + 6a +6a +9
= 2a(2a + 3) + 3a ( 2a+3)
= (2a+3) ( 2a+3)
find the value of a
(2a+3) (2a+3)=0
=(2a+3)^2=0
= 2a+3=0
= a = -3/2
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