Answer:
- The two solutions are:

- The next and every step are below.
Explanation:
1.
: Given (addition property / add - 3 to both sides)
2.
: Given (commom factor - 2)
3. 
To obtain the perfect square it was added the square of half of the coefficient of x: (1/2)² = 1/4, inside the parenthesis.
Since, the terms inside the parentthesis are multiplied by - 2, you have to add - 2 (1/4) = - 1/2 to the left side of the equation.
4. Now, you have that the trinomial x² - x + 1/4 is a square perfect trinomial which is factored as (x - 1/2)² and get the expression:

5. Divide both sides by - 2 to get the next expression:

6. The last step is to extract squere root from both sides of the equality:

The greatest common for 12 and 54 is 6.
Answer: I believe the answer is 59 Items
Step-by-step explanation: 28 + 19= 47
47+12= 59
Answer:
x = 3
Step-by-step explanation:
3x + 2 = 11
Subtract 2 from both sides:
3x + 2 - 2 = 11 - 2
3x = 9
Divide both sides by 3:
3x / 3 = 9 / 3
x = 3