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Scrat [10]
2 years ago
10

How do you solve 8n squared+4n-16= -n squared using the quadratic formula?

Mathematics
1 answer:
klemol [59]2 years ago
3 0
8n² + 4n - 16 = -n²
8n² + n² + 4n - 16 = -n² + n²
9n² + 4n - 16 = 0
n = <u>-4 +/- √(4² - 4(9)(-16))</u>
                     2(9)
n = <u>-4 +/- √(16 + 576)</u>
                   18
n = <u>-4 +/- √(592)
</u>              18
n = <u>-4 +/- 24.33</u>
              18
n = -<u>4 + 24.33</u>        n = <u>-4 - 24.33</u>
             18                           18
n = <u>20.33</u>                n = <u>-28.33</u>
         18                            18
n = 1.1294              n = -1.57389
<u />
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