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Secondary 1 | Maths
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Pls help
Date Posted: 4 years ago
Views: 215
Sec 1 students don't learn how to solve quadratic equations.
Worse still, this particular quadratic equation can't even be factorised.
This is a Sec 3 level question.
But well, I will still use the quadratic formula anyway.
x = -4 +- square root of (4^2 - 4 * 1 * (-7)), whole thing divided by 2 (1)
x = -4 +- sqrt 44, whole thing divided by 2
x = -4 +- 2 sqrt 11, whole thing divided by 2
x = -2 +- sqrt 11
x = -2 + sqrt 11 or x = -2 - sqrt 11
Worse still, this particular quadratic equation can't even be factorised.
This is a Sec 3 level question.
But well, I will still use the quadratic formula anyway.
x = -4 +- square root of (4^2 - 4 * 1 * (-7)), whole thing divided by 2 (1)
x = -4 +- sqrt 44, whole thing divided by 2
x = -4 +- 2 sqrt 11, whole thing divided by 2
x = -2 +- sqrt 11
x = -2 + sqrt 11 or x = -2 - sqrt 11
See 1 Answer
done
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clear
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hope this helps
Date Posted:
4 years ago
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