factorise the following: 4x²+12x+9
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Answered by
3
Answer:
x=-3/2 answer
Step-by-step explanation:
4x^2+12x+9
So for factors, u have to split 12x in such a way that some common factors can come out.
4x^2+12x+9
= 4x^2+6x+6x+9
= 2x(2x+3)+3(2x+3)
= (2x+3)(2x+3)
To find the value of X ,
(2x+3)(2x+3)=0
2x+3=0
2x=-3
x=-3/2 answer
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Answered by
1
Step-by-step explanation:
4x²+12x+9
1) Middle Term Split
4x² * 9
36x²
which can be split as 6x and 6x
= 4x² +6x +6x + 9
= 2x(2x+3) +3(2x+3)
answer = (2x+3) (2x+3)
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