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Mathematics 8 Online
OpenStudy (anonymous):

Identify the number of solutions to the quadratic equation x^2 + 4x + 10 = 0. Answer 0 1 2

OpenStudy (anonymous):

You'll want to evaluate the discriminant: \[b^2 - 4ac\]In this case, a=1 b=4 and c=10. So plug those values in and what do you get?

OpenStudy (anonymous):

@vinnv226 i got 55

OpenStudy (anonymous):

When I plug in I get this: 16 - 4(1)(10) 16-40 -24

OpenStudy (anonymous):

So, since our discriminant is not zero, there are two solutions. But it's worth noting that they are both complex, and don't fall in the set of real numbers. This is because the discriminant is negative.

OpenStudy (anonymous):

Thanx @vinnv226

OpenStudy (anonymous):

No problem, glad I could help

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