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Write a quadratic equation in the form x² + bx + c = 0 that has the following roots: -7 ± 5i

User William GP
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Final answer:

To write a quadratic equation in the form x² + bx + c = 0 with roots -7 ± 5i, we can use the fact that complex roots come in conjugate pairs. The quadratic equation is x² + 14x + 74 = 0.

Step-by-step explanation:

To write a quadratic equation in the form x² + bx + c = 0 with roots -7 ± 5i, we can use the fact that complex roots come in conjugate pairs. The roots are -7 + 5i and -7 - 5i. Therefore, the equation can be written as (x - (-7 + 5i))(x - (-7 - 5i)) = 0.

Expanding this equation, we get (x + 7 - 5i)(x + 7 + 5i) = 0. Multiplying these binomials, we have (x + 7)² - (5i)² = 0.

Simplifying further, we get x² + 14x + 49 - 25i² = 0. Since i² = -1, the equation simplifies to x² + 14x + 49 + 25 = 0.

Therefore, the quadratic equation in the form x² + bx + c = 0 with roots -7 ± 5i is x² + 14x + 74 = 0.

User Ilight
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