Solve. x² + 6x + 9 = 12 (Choices in photo)

Mathematics

2 answers:

Irina18 [472]3 years ago

6 0

X^2 + 6x + 9 = 12

X^2 + 6x - 3 = 0

(-6 ± √(6^2 - 4*1*-3) ) / 2

3 ± √(48) / 2

3 ± 4√(3) / 2

3 ± 2√(3)

jeyben [28]3 years ago

6 0

To solve this problem and to calculate the value of the variable "x", you must apply the following proccedure:

1. You have the quadratic equation:

x²+6x+9=12

2. Then:

x²+6x+9-12=0
x²+6x-3=0

3. You must apply the quadratic formula, which is:

(-b±√(b^2-4ac))/2a

a=1
b=6
c=-3

4. Then, the result is:

x=-3±2√3

Therefore, the correct option is the first one: x=-3±2√3

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Iliana cubed the number of flowering plants in her garden, then added 2 vegetable plants. Let p represent the original number of

gulaghasi [49]

Total number of plants is p³ +2 ; when p = 3 the number of plants is 29 , Option D is the right answer.

<h3>What is an Equation ?</h3>

Equation is mathematical statement formed when two algebraic expressions are equated using an equal sign.

It is given that

Let p represent the original number of plants in her garden.

then total number of plants in her garden = p³ +2

the total number of plants if p = 3 is

=3³ +2

= 29