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secondary 4 | A Maths
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Date Posted: 4 years ago
Views: 188
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Cannot use sum of roots?
Let me think.
a = 1, b = -2k - 4, c = 10k - 1
Suppose both roots are called Z.
Then sum of roots 2Z = 2k + 4 and product of roots Z^2 = 10k - 1.
Must do simul after that.
a = 1, b = -2k - 4, c = 10k - 1
Suppose both roots are called Z.
Then sum of roots 2Z = 2k + 4 and product of roots Z^2 = 10k - 1.
Must do simul after that.
See 2 Answers
done
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Here
Date Posted:
4 years ago
done
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The other method, done by sum and product of roots (after all, this and the discriminant of roots are studies of the same quadratic equations so they must be related)
Date Posted:
4 years ago
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