Question

it is a quadratic equation and need to be solved by completing square method 3x^2+18x+15=0

Answer 1

Divide both sides of the equation by 3, which yields x2+6x+5=0. Add 4 to both sides of the equation, which yields x2+6x+9=4. This is done to make the left side (x+3)2. Taking the square root of both sides yields x+3=2. Hence, x=−1.

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Answer 2

Answer:

Step-by-step explanation:

Divide both sides of the equation by 3, which yields x ^2 + 6 x + 5 = 0  . Add 4 to both sides of the equation, which yields  x 2 + 6 x + 9 = 4 .This is done to make the left side  ( x + 3 ) 2 . Taking the square root of both sides yields  x + 3 = 2 . Hence,  x = − 1 .