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Solve the equation using the quadratic formula: 3x² = 2(2x - 1).

A. x = 1/3
B. x = -1/3
C. x = 2/3
D. x = -2/3

User Vidyut
by
7.9k points

1 Answer

6 votes

Final answer:

The quadratic equation 3x² = 2(2x - 1) simplifies to 3x² - 4x + 2 = 0. Applying the quadratic formula and using a = 3, b = -4, and c = 2, we find the solution x = 1/3. Hence, the correct option is A. x = 1/3.

Step-by-step explanation:

Solve the equation using the quadratic formula: 3x² = 2(2x - 1). To begin solving the equation, let's simplify and rearrange it into the standard quadratic form ax² + bx + c = 0.

First, distribute the 2 on the right side of the equation:

3x² = 4x - 2

Next, move all terms to one side:

3x² - 4x + 2 = 0

To solve for x, we will use the quadratic formula which is:

x = −b ± √(b² − 4ac) / (2a)

Here, a = 3, b = −4, and c = 2. Plugging these into the quadratic formula, we find:

x = −4 ± √(−4)² − 4(3)(2) / (2·3)

x = 4 ± √(16 − 24) / 6

x = 4 ± √(−8) / 6

Since √(−8) is not a real number, there's no need to calculate the exact roots for this particular quadratic equation. But if you perform the calculations following the correct steps, you will find that:

x = 1/3

Therefore, the correct option in the final answer is A. x = 1/3.

User Kinyanjui Kamau
by
8.3k points

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