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02.07.2022 - 00:05

Solve a \quadratic expression by factoring: x^3+18x^2+45x=0

Question:

Solve a \quadratic expression by factoring:

{eq}x^3+18x^2+45x=0 {/eq}

Answers (1)

Marjorie April 5, 2023 в 22:51

We cannot solve this expression by factoring because it is not a \quadratic expression. A \quadratic expression has a degree of 2, whereas this expression has a degree of 3. To solve this expression, we can factor out x to get: x(x^2 + 18x + 45) = 0 Now we have a \quadratic expression that can be factored: x(x + 9)(x + 5) = 0 Using the zero product property, we can see that the solutions are: x = 0, -9, -5

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