Solved on Dec 12, 2023

Find the value of xx that satisfies the quadratic equation 3x2+6x=33 x^{2} + 6 x = -3.

STEP 1

Assumptions
1. We are given a quadratic equation in the form ax2+bx+c=0ax^2 + bx + c = 0.
2. The coefficients are a=3a = 3, b=6b = 6, and c=3c = -3.
3. We need to find the values of xx that satisfy the equation 3x2+6x=33x^2 + 6x = -3.

STEP 2

First, we need to rewrite the equation in the standard form of a quadratic equation.
3x2+6x+3=03x^2 + 6x + 3 = 0

STEP 3

Now, we can attempt to factor the quadratic if possible. We look for two numbers that multiply to ac=33=9a \cdot c = 3 \cdot 3 = 9 and add up to b=6b = 6.

STEP 4

The two numbers that satisfy these conditions are 33 and 33, since 33=93 \cdot 3 = 9 and 3+3=63 + 3 = 6.

STEP 5

We can now factor the quadratic equation using these numbers.
3x2+3x+3x+3=03x^2 + 3x + 3x + 3 = 0

STEP 6

Next, we group the terms to factor by grouping.
(3x2+3x)+(3x+3)=0(3x^2 + 3x) + (3x + 3) = 0

STEP 7

Factor out the common factors from each group.
3x(x+1)+3(x+1)=03x(x + 1) + 3(x + 1) = 0

STEP 8

Since both terms have a common factor of (x+1)(x + 1), we can factor it out.
(3x+3)(x+1)=0(3x + 3)(x + 1) = 0

STEP 9

Now we have the product of two factors equal to zero. According to the zero product property, if the product of two factors is zero, at least one of the factors must be zero.

STEP 10

Set each factor equal to zero and solve for xx.
3x+3=0orx+1=03x + 3 = 0 \quad \text{or} \quad x + 1 = 0

STEP 11

Solve the first equation for xx.
3x=33x = -3

STEP 12

Divide both sides by 33 to isolate xx.
x=1x = -1

STEP 13

Solve the second equation for xx.
x=1x = -1

STEP 14

We find that both factors give us the same solution for xx.
The solution to the equation 3x2+6x=33x^2 + 6x = -3 is x=1x = -1.

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