5x^2 = - 30x-40 find the zeros

Question

Mathematics

Moses Sharp

4 December, 07:43

5x^2 = - 30x-40 find the zeros

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Answers (2)

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Adriel Howell · Answer 1

We could rewrite the equation like this:

5x² + 30x + 40 = 0

To find the zeros, let's factor the trinomial:

First factor out the GCF: 5 (x²+6x+8) = 0

Next: 5 (x+2) (x+4) = 0

Now for this to be a true statement. 'x' would have to either be equal to - 2 or - 4.

So the zeros of the equation are x = - 2 and x = - 4

Ruth Daugherty · Answer 2

Ruth Daugherty 4 December, 11:06

0

The answer is x = - 2 and - 4