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How to factor using quadratic form

User Dmitri Soshnikov
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1 Answer

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23 votes

Explanation:

Factoring using the quadratic form involves using the quadratic formula to find the two values that, when multiplied together, give the original quadratic equation. The quadratic formula is as follows:

x = (-b ± √(b^2 - 4ac)) / 2a

To use the quadratic formula to factor a quadratic equation, first rewrite the equation in the form of ax^2 + bx + c = 0, where a, b, and c are constants and x is the variable. Then, plug the values of a, b, and c into the quadratic formula to solve for x. The two values of x that you find are the factors of the original quadratic equation.

Here's an example:

Suppose you want to factor the quadratic equation 2x^2 + 7x + 3 = 0. In this case, a is 2, b is 7, and c is 3. Plugging these values into the quadratic formula, we get:

x = (-7 ± √(7^2 - 4 * 2 * 3)) / 2 * 2

Solving this equation, we get x = (-7 ± √(49 - 24)) / 4, which simplifies to x = (-7 ± √(25)) / 4. Since the square root of 25 is 5, we can further simplify this to x = (-7 ± 5) / 4, which gives us the solutions x = -1 and x = -3/2.

Therefore, the two factors of the original equation 2x^2 + 7x + 3 = 0 are x + 1 and x + 3/2.

User Semin Park
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