factorise 9xsquare+18x+5
Answers
Answered by
1
Answer:
Step-by-step explanation:
(3x + 5) (3x +1)
Answered by
1
Answer:
x=-5/3 and x=-1/3
Step-by-step explanation:
9x²+18x+5=0
Compare this with general quadratic polynomial: ax²+bx+c=0
So, ax²+bx+c=9x²+18x+5
a=9
b=18
c=5
Multiply a and c.
ac=9*5=45
By splitting the middle term as 15x and 3x, we will get,
9x²+3x+15x+5=0
3x(3x+1)+5(3x+1)=0
3x+5=0 and 3x+1=0
3x=-5 and 3x=-1
x=-5/3 and x=-1/3
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