Question

$9x {}^{2} + 18x + 8$

Answer 1

Answer:(-4/3) or, (-2/3)

Step-by-step explanation:

9x^2+6x+12x+8

3x(3x+2)+4(3x+2)

(3x+4)(3x+2)

Therefore, X=(-4/3) or,-2/3

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Answer 2

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finding the roots of the quadratic equation by using Completing the Square Method....

9x²+18x+8 = (3x)²+2(3x)(3)+3²-1

                 =(3x+3)²-1²

                 = [(3x+3)-1]  [(3x+3)+1]

                     = (3x+2) (3x+4)

                 ∴ x= -2/3 or x=-4/3

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