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lianna [129]
3 years ago
15

How to solve a quadratic equation that does not factor?

Mathematics
1 answer:
svlad2 [7]3 years ago
7 0
Use the formula or complete the square.
The zeroes of the quadratic can be real and rational; real and irrational; complex conjugates.
If the quadratic is ax²+bx+c, x=(-b+√b²-4ac)/2a.
If b² > 4ac the solutions are real. If b²-4ac is a perfect square, the solutions are real and rational; otherwise they’re real but irrational.
If b² < 4ac the solutions are complex.
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