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the quadratic formula is really complex.
so, if you can avoid it, you should.
one way i do this is by getting the trinomial into
X^2 - 2YX + Y^2 = 0 form.
here's an example
lets say we have
x^2 - 2x - 5 = 0
normally we would have to do the quadratic formula
however, if we get it into this form, we can get
x^2 - 2(1)x + 1 = 6
all i did was add 6 to both sides of the equation.
you can now simplify the left side of the equation, and be left with
(x-1)^(2) = 6
to get ride of the exponent on the left side, find the square root of both sides.
this will leave you with
(x-1) = (+ or -)radical(6)
add one to both sides and you will get
x = 1 (+ or -)radical(6)
therefore,
x can equal 1 + radical(6)
or 1 - radical(6)
now, this may seem complex, but it is easy once you get used to it. It is far more efficient than the long quadratic formula.
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∙ 12y ago
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Can you write a parody to Up We Go by Lights about the quadratic formula the discriminant and the nature of the roots?
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Can you write a parody to Up We Go by Lights about the quadratic formula the discriminant and the nature of the roots?
No.
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yes
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